2007-08-18  Paul Thomas  <pault@gcc.gnu.org>
	    Janus Weil  <jaydub66@gmail.com>

	* interface.c (gfc_match_interface,gfc_match_abstract_interface,
	gfc_match_end_interface,gfc_add_interface): Add abstract interface.
	* dump-parse-tree.c (gfc_show_attr): Ditto.
	* gfortran.h (interface_type,symbol_attribute): Ditto.
	* module.c (gfc_match_use,ab_attribute,attr_bits,
	mio_symbol_attribute): Ditto.
	* resolve.c (resolve_function): Ditto.
	* match.h: Ditto.
	* parse.c (decode_statement): Ditto.
	(parse_interface): Ditto, check for C1203 (name of abstract interface
	cannot be the same as an intrinsic type).
	* decl.c (gfc_match_bind_c): Check for NAME= with abstract interfaces.
	(access_attr_decl): Handle Abstract interfaces.


2007-08-17  Tobias Burnus  <burnus@net-b.de>

	* gfortran.dg/interface_abstract_1.f90: New.

From-SVN: r127612