add new fn G_owner()

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49746 15284696-431f-4ddb-bdfa-cd5b030d7da7

include/defs/gis.h

@@ -486,6 +486,7 @@ char *G_convert_dirseps_to_host(char *);
 char *G_convert_dirseps_from_host(char *);
 int G_lstat(const char *, STRUCT_STAT *);
 int G_stat(const char *, STRUCT_STAT *);
+const char *G_owner(const char *);
 
 /* percent.c */
 void G_percent(long, long, int);