Ignore built doc files

.gitignore

@@ -202,3 +202,26 @@ speech_tools/testsuite/xml_example
 speech_tools/testsuite/xml_example.out
 speech_tools/testsuite/xml_regression
 speech_tools/testsuite/xml_regression.out
+speech_tools/doc/man/*.dox
+speech_tools/doc/doxygen
+festival/doc/festfeat.texi
+festival/doc/festfunc.texi
+festival/doc/festival.aux
+festival/doc/festival.cp
+festival/doc/festival.cps
+festival/doc/festival.dvi
+festival/doc/festival.fn
+festival/doc/festival.ky
+festival/doc/festival.log
+festival/doc/festival.pg
+festival/doc/festival.ps
+festival/doc/festival.toc
+festival/doc/festival.tp
+festival/doc/festival.vr
+festival/doc/festvars.texi
+festival/doc/html/
+festival/doc/info/
+festival/doc/refcard.aux
+festival/doc/refcard.dvi
+festival/doc/refcard.log
+festival/doc/refcard.ps