patch 7.4.1552

Problem:    ":colorscheme" does not use 'packpath'.
Solution:   Also use in "start" and "opt" directories in 'packpath'.

src/hardcopy.c

@@ -1741,7 +1741,7 @@ prt_find_resource(char *name, struct prt_ps_resource_S *resource)
     vim_strcat(buffer, (char_u *)name, MAXPATHL);
     vim_strcat(buffer, (char_u *)".ps", MAXPATHL);
     resource->filename[0] = NUL;
-    retval = (do_in_runtimepath(buffer, FALSE, prt_resource_name,
+    retval = (do_in_runtimepath(buffer, 0, prt_resource_name,
 							   resource->filename)
 	    && resource->filename[0] != NUL);
     vim_free(buffer);