Distribute cmake-zipconf.h.in.

--HG--
branch : HEAD
diff --git a/Makefile.am b/Makefile.am
index a25b86c..0a3e695 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -9,5 +9,6 @@
 EXTRA_DIST=	LICENSE \
 		CMakeLists.txt \
 		cmake-config.h.in \
+		cmake-zipconf.h.in \
 		libzip.pc.in \
 		libzip-uninstalled.pc.in