Improve the printf message when a module failed to load. This gives the

user some clue about the possibility of a __FreeBSD_version mismatch.

Discussed with:	rwatson, jhb
Approved by:	re (kib)

sys/kern/kern_linker.c

@@ -2079,8 +2079,8 @@ linker_load_dependencies(linker_file_t lf)
 		}
 		error = linker_load_module(NULL, modname, lf, verinfo, NULL);
 		if (error) {
-			printf("KLD %s: depends on %s - not available\n",
-			    lf->filename, modname);
+			printf("KLD %s: depends on %s - not available or"
+			    " version mismatch\n", lf->filename, modname);
 			break;
 		}
 	}