* gfortran.h (gfc_use_list): Add where field.

	* gfortran.h (gfc_use_list): Add where field.
	* module.c (use_locus): New static variable.
	(gfc_match_use): Set it.
	(gfc_use_module): Copy it to gfc_use_list's where field.
	* trans-decl.c (gfc_generate_module_vars): Call gfc_trans_use_stmts.
	(gfc_trans_use_stmts): Set backend locus before calling the debug
	hook.  Allow non-VAR_DECLs to be created even for non-external
	module.  Don't emit anything so far for renames from different
	modules.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@139780 138bc75d-0d04-0410-961f-82ee72b054a4