Add GIS_H_VERSION macro

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@31626 15284696-431f-4ddb-bdfa-cd5b030d7da7

include/gis.h

@@ -40,6 +40,8 @@
 static const char *GRASS_copyright __attribute__((unused))
 	= "GRASS GNU GPL licensed Software" ;
 
+#define GIS_H_VERSION "$Revision$"
+
 /* Define TRUE and FALSE for boolean comparisons */
 #ifndef TRUE
 #define TRUE 1