[gfortran,commited] Fix handling of -J option

[FX Coudert]

The following patch, commited to mainline as rev. 121000, fixes PR  
fortran/30446 by adding the path specified in the -J (or -M) option  
to the search path for modules. Otherwise, module files were created  
in a given directory but gfortran then couldn't find them.

Commited as obvious after bootstraping (with Dirk Muller's patch to  
prevent the current bootstrap breakage) and regtesting with  
RUNTESTFLAGS="--target_board=unix/-Jmodules". I will commit it to 4.2  
after bootstrap and regtesting.



2007-01-20  Francois-Xavier Coudert  <coudert@clipper.ens.fr>

	PR fortran/30446
	* options.c (gfc_handle_module_path_options): Path used in -J
	option is now added to the module search path.


Index: options.c
===================================================================
--- options.c   (revision 120949)
+++ options.c   (working copy)
@@ -345,6 +345,8 @@
    gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2);
    strcpy (gfc_option.module_dir, arg);
    strcat (gfc_option.module_dir, "/");
+
+  gfc_add_include_path (gfc_option.module_dir, true);
}
static void