build: add missing files to tarballs target

fixes errors ./configure and make was complaining about

NOTE: This is a candidate for the 9.0 branch.

Reviewed-by: Matt Turner <mattst88@gmail.com>
diff --git a/Makefile.am b/Makefile.am
index 96ab449..a5708a3 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -61,9 +61,15 @@
 EXTRA_FILES = \
 	aclocal.m4					\
 	configure					\
+	bin/ar-lib					\
+	bin/compile					\
 	bin/config.sub					\
 	bin/config.guess				\
+	bin/depcomp					\
 	bin/install-sh					\
+	bin/ltmain.sh					\
+	bin/missing					\
+	bin/ylwrap					\
 	src/glsl/glsl_parser.cc				\
 	src/glsl/glsl_parser.h				\
 	src/glsl/glsl_lexer.cc				\