Add new .m4 files to package.xml.in file

Author: derickr

bin/prep-release.php

@@ -35,6 +35,8 @@ function get_files() {
         "phongo_*.{h,c}",
         "config.{m4,w32}",
         "Makefile.frag",
+        "scripts/build/autotools/*.{m4}",
+        "scripts/build/autotools/m4/*.{m4}",
 
         "src/*.{c,h}",