Merge branch 'dk/make-git-contacts-executable' into next

Building "git contacts" script (in contrib/) leaves the resulting
file unexecutable, which has been corrected.

* dk/make-git-contacts-executable:
  perl: also mark git-contacts executable

Author: gitster

generate-perl.sh

@@ -30,7 +30,7 @@ sed -e '1{' \
     "$INPUT" >"$OUTPUT"
 
 case "$INPUT" in
-*.perl)
+*.perl|*git-contacts)
 	chmod a+x "$OUTPUT";;
 *)
 	;;