build: Ship install-sh in the tarball
Fixes the problem where configure from the tarball would report missing
files:
$ ./configure
configure: error: cannot find install-sh, install.sh, or shtool in bin
NOTE: This is a candidate for the 9.0 branch.
diff --git a/Makefile.am b/Makefile.am
index 23355ff..5e0071c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -61,6 +61,7 @@
EXTRA_FILES = \
aclocal.m4 \
configure \
+ bin/install-sh \
src/glsl/glsl_parser.cc \
src/glsl/glsl_parser.h \
src/glsl/glsl_lexer.cc \