Test file updates

Mainly due to \GPT@space, also some from the l3build update.

testfiles/dvips001.luatex.tlg

@@ -620,12 +620,12 @@ Just continue, I'll change it to 0xFFFD.
 l. ...\includegraphics[page = 1]{example-image-a.pdf}
 (That makes 100 errors; please try again.)
 Here is how much of LuaTeX's memory you used:
- 638 strings out of 494481
+ 639 strings out of 494481
  100000,89155 words of node,token memory allocated
  460 words of node memory still in use:
    5 hlist, 1 vlist, 1 rule, 2 local_par, 1 dir, 5 glue, 1 penalty, 7 attribute, 45 glue_spec, 7 attribute_list, 1 temp, 6 if_stack, 1 write, 3 special nodes
    avail lists: 2:2,4:1,5:3,8:1
- 4802 multiletter control sequences out of 65536+600000
+ 4803 multiletter control sequences out of 65536+600000
  15 fonts using 723367 bytes
  27i,1n,21p,363b,69s stack positions out of 5000i,500n,10000p,200000b,100000s
 !  ==> Fatal error occurred, bad output DVI file produced!

testfiles/luatex001.luatex.tlg

@@ -103,7 +103,7 @@ Completed box being shipped out [1]
 ...\glue 0.0 plus 1.0fil
 ...\TU/lmr/m/n/10 1
 ...\glue 0.0 plus 1.0fil
-</usr/local/texlive/2017/texmf-dist/tex/latex/mwe/example-image-a.pdf></usr/local/texlive/2017/texmf-dist/tex/latex/mwe/example-image-a.pdf><./az2.pdf>
+<../example-image-a.pdf><../example-image-a.pdf><./az2.pdf>
 File: clip-1-2.jpg Graphic file (type jpg)
 <use clip-1-2.jpg>
 Package luatex.def Info: clip-1-2.jpg  used on input line .... on input line ....

testfiles/luatex001.tlg

@@ -771,10 +771,10 @@ l. ...\END
 If you really absolutely need more capacity,
 you can ask a wizard to enlarge me.
 Here is how much of TeX's memory you used:
- 1449 strings out of 492995
- 20923 string characters out of 6132689
- 76201 words of memory out of 5000000
- 5019 multiletter control sequences out of 15000+600000
+ 1450 strings out of 492995
+ 20911 string characters out of 6132689
+ 76204 words of memory out of 5000000
+ 5020 multiletter control sequences out of 15000+600000
  3640 words of font info for 14 fonts, out of 8000000 for 9000
  1141 hyphenation exceptions out of 8191
  5000i,1n,4996p,296b,523s stack positions out of 5000i,500n,10000p,200000b,80000s

testfiles/luatex001.xetex.tlg

@@ -771,10 +771,10 @@ l. ...\END
 If you really absolutely need more capacity,
 you can ask a wizard to enlarge me.
 Here is how much of TeX's memory you used:
- 1450 strings out of 493005
- 21002 string characters out of 6134596
- 83371 words of memory out of 5000000
- 5438 multiletter control sequences out of 15000+600000
+ 1451 strings out of 493005
+ 20990 string characters out of 6134596
+ 83374 words of memory out of 5000000
+ 5439 multiletter control sequences out of 15000+600000
  3648 words of font info for 15 fonts, out of 8000000 for 9000
  1348 hyphenation exceptions out of 8191
  5000i,1n,4996p,296b,506s stack positions out of 5000i,500n,10000p,200000b,80000s

testfiles/pdftex001.luatex.tlg

@@ -462,11 +462,11 @@ l. ...\END
 If you really absolutely need more capacity,
 you can ask a wizard to enlarge me.
 Here is how much of LuaTeX's memory you used:
- 992 strings out of 494481
+ 993 strings out of 494481
  100000,89155 words of node,token memory allocated 594 words of node memory still in use:
    5 hlist, 1 rule, 2 local_par, 1 dir, 5 glue, 1 penalty, 27 glyph, 5 attribute, 45 glue_spec, 5 attribute_list, 1 temp, 5 if_stack, 1 write nodes
    avail lists: 2:2,3:1,4:2,5:3,8:1
- 5155 multiletter control sequences out of 65536+600000
+ 5156 multiletter control sequences out of 65536+600000
  15 fonts using 723367 bytes
  5000i,1n,4996p,226b,50s stack positions out of 5000i,500n,10000p,200000b,100000s
 !  ==> Fatal error occurred, no output PDF file produced!

testfiles/pdftex001.tlg

@@ -88,7 +88,7 @@ Completed box being shipped out [1]
 ...\glue 0.0 plus 1.0fil
 ...\OT1/cmr/m/n/10 1
 ...\glue 0.0 plus 1.0fil
- </usr/local/texlive/2017/texmf-dist/tex/latex/mwe/example-image-a.pdf> </usr/local/texlive/2017/texmf-dist/tex/latex/mwe/example-image-a.pdf> <./az2.pdf>
+ <../example-image-a.pdf> <../example-image-a.pdf> <./az2.pdf>
 File: clip-1-2.jpg Graphic file (type jpg)
 <use clip-1-2.jpg>
 Package pdftex.def Info: clip-1-2.jpg  used on input line .... on input line ....

testfiles/pdftex001.xetex.tlg

@@ -442,10 +442,10 @@ l. ...\END
 If you really absolutely need more capacity,
 you can ask a wizard to enlarge me.
 Here is how much of TeX's memory you used:
- 931 strings out of 493005
- 11793 string characters out of 6134596
- 81944 words of memory out of 5000000
- 4959 multiletter control sequences out of 15000+600000
+ 932 strings out of 493005
+ 11781 string characters out of 6134596
+ 81947 words of memory out of 5000000
+ 4960 multiletter control sequences out of 15000+600000
  3648 words of font info for 15 fonts, out of 8000000 for 9000
  1348 hyphenation exceptions out of 8191
  5000i,1n,4996p,229b,50s stack positions out of 5000i,500n,10000p,200000b,80000s

testfiles/xetex001.luatex.tlg

@@ -2,7 +2,7 @@ This is a generated file for the l3build validation system.
 Don't change this file in any respect.
 ! Undefined control sequence.
 <argument> \setbox \@tempboxa =\hbox {\XeTeXpdffile 
-                                         "\Gin@@name "\space \ifx \Gin@page \@e
+                                         "\Gin@@name "\GPT@space \ifx \Gin@page
 l. ...\includegraphics{example-image-a}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -22,7 +22,7 @@ spelling (e.g., `I\hbox'). Otherwise just continue,
 and I'll forget about whatever was undefined.
 ! Undefined control sequence.
 <argument> \setbox \@tempboxa =\hbox {\XeTeXpdffile 
-                                         "\Gin@@name "\space \ifx \Gin@page \@e
+                                         "\Gin@@name "\GPT@space \ifx \Gin@page
 l. ...\includegraphics[page = 1]{example-image-a.pdf}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -42,7 +42,7 @@ spelling (e.g., `I\hbox'). Otherwise just continue,
 and I'll forget about whatever was undefined.
 ! Undefined control sequence.
 <argument> \setbox \@tempboxa =\hbox {\XeTeXpdffile 
-                                         "\Gin@@name "\space \ifx \Gin@page \@e
+                                         "\Gin@@name "\GPT@space \ifx \Gin@page
 l. ...\includegraphics{az2}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -62,7 +62,7 @@ spelling (e.g., `I\hbox'). Otherwise just continue,
 and I'll forget about whatever was undefined.
 ! Undefined control sequence.
 <argument> \setbox \@tempboxa =\hbox {\XeTeXpdffile 
-                                         "\Gin@@name "\space \ifx \Gin@page \@e
+                                         "\Gin@@name "\GPT@space \ifx \Gin@page
 l. ...\includegraphics[pagebox = artbox]{az2}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -86,7 +86,7 @@ File: clip-1-2.png Graphic file (type bmp)
 <clip-1-2.png>
 ! Undefined control sequence.
 <argument> \setbox \@tempboxa =\hbox {\XeTeXpicfile 
-                                         "\Gin@@name "\space \ifx \Gin@page \@e
+                                         "\Gin@@name "\GPT@space \ifx \Gin@page
 l. ......degraphics[interpolate = true]{clip-1-2.jpg}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have

testfiles/xetex001.tlg

@@ -2,7 +2,7 @@ This is a generated file for the l3build validation system.
 Don't change this file in any respect.
 ! Undefined control sequence.
 <argument> ...ox \@tempboxa =\hbox {\XeTeXpdffile 
-                                                  "\Gin@@name "\space \ifx \...
+                                                  "\Gin@@name "\GPT@space \i...
 l. ...\includegraphics{example-image-a}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -22,7 +22,7 @@ spelling (e.g., `I\hbox'). Otherwise just continue,
 and I'll forget about whatever was undefined.
 ! Undefined control sequence.
 <argument> ...ox \@tempboxa =\hbox {\XeTeXpdffile 
-                                                  "\Gin@@name "\space \ifx \...
+                                                  "\Gin@@name "\GPT@space \i...
 l. ......udegraphics[page = 1]{example-image-a.pdf}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -42,7 +42,7 @@ spelling (e.g., `I\hbox'). Otherwise just continue,
 and I'll forget about whatever was undefined.
 ! Undefined control sequence.
 <argument> ...ox \@tempboxa =\hbox {\XeTeXpdffile 
-                                                  "\Gin@@name "\space \ifx \...
+                                                  "\Gin@@name "\GPT@space \i...
 l. ...\includegraphics{az2}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -62,7 +62,7 @@ spelling (e.g., `I\hbox'). Otherwise just continue,
 and I'll forget about whatever was undefined.
 ! Undefined control sequence.
 <argument> ...ox \@tempboxa =\hbox {\XeTeXpdffile 
-                                                  "\Gin@@name "\space \ifx \...
+                                                  "\Gin@@name "\GPT@space \i...
 l. ...\includegraphics[pagebox = artbox]{az2}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have
@@ -86,7 +86,7 @@ File: clip-1-2.png Graphic file (type bmp)
 <clip-1-2.png>
 ! Undefined control sequence.
 <argument> ...ox \@tempboxa =\hbox {\XeTeXpicfile 
-                                                  "\Gin@@name "\space \ifx \...
+                                                  "\Gin@@name "\GPT@space \i...
 l. ......graphics[interpolate = true]{clip-1-2.jpg}
 The control sequence at the end of the top line
 of your error message was never \def'ed. If you have