gentoo-overlay/app-shells/zsh/files/zsh-5.1.0-gcc-5.patch

https://bugs.gentoo.org/547950
http://www.zsh.org/mla/workers/2015/msg02660.html

fix building w/gcc-5

--- a/Src/Modules/system.mdd
+++ b/Src/Modules/system.mdd
@@ -15,7 +15,7 @@
 		touch errtmp.out; \
 	   else \
 		$(AWK) -f $(sdir)/errnames1.awk @ERRNO_H@ >errtmp.c; \
-		$(CPP) errtmp.c >errtmp.out; \
+		$(CPP) -P errtmp.c >errtmp.out; \
 	   fi
 	   $(AWK) -f $(sdir)/errnames2.awk errtmp.out > $@
 	   rm -f errtmp.c errtmp.out