Add a script to manually build the version.h file.

This script is used to manually build a version.h file.
It is needed when building with MinGW using a cygwin
hosted repository.

scripts/CREATE_VERSION.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+# This script manually creates a version.h file.
+#
+# It is used when creating a MinGW executable from a Cygwin
+# hosted git repository. It assumes that git is available.
+#
+#    sh scripts/CREATE_VERSION.sh
+#
+
+echo "Building verion.h with git describe"
+tmp=`git describe | sed -e 's;\(.*\);#define VERSION_TAG "\1";'`
+echo "$tmp" > version.h