build: no longer build PIC version of libfl.

The PIC version of libfl was not being built correctly. From the lack
of bug reports around this problem, we conclude that the PIC version
of libfl is not used and so we drop it from the build build targets
for flex.

NEWS

@@ -5,6 +5,12 @@ See the file COPYING for copying conditions.
 
 * version 2.6.3
 
+** build
+
+*** the PIC version of libfl was not correctly built. It is no longer
+    included in the build/installation targets of flex since it was
+    unused.
+
 * version 2.6.2 released 2016-10-24
 
 ** flex internals

src/Makefile.am

@@ -8,8 +8,7 @@ m4 = @M4@
 bin_PROGRAMS = flex
 noinst_PROGRAMS = stage1flex
 lib_LTLIBRARIES = \
-	libfl.la \
-	libfl_pic.la
+	libfl.la
 
 stage1flex_SOURCES = \
 	scan.l \
@@ -62,12 +61,6 @@ libfl_la_SOURCES = \
 
 libfl_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
 
-libfl_pic_la_SOURCES = \
-	libmain.c \
-	libyywrap.c
-
-libfl_pic_la_LDFLAGS = -version-info @SHARED_VERSION_INFO@
-
 include_HEADERS = \
 	FlexLexer.h