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	* cppfiles.c (hash_IHASH): Just return i->hash.
	(cpp_included): Set dummy.hash using _cpp_calc_hash.  Use
	htab_find_with_hash.
	(cpp_read_file): Likewise.
	(find_include_file): Likewise.  Properly initialize
	ih->nshort.  Share ih->name and ih->nshort if possible.
	* cpphash.c (_cpp_calc_hash): New function.
	(hash_HASHNODE): Just return h->hash.
	(_cpp_lookup): Set dummy.hash using _cpp_calc_hash.  Use
	htab_find_with_hash.
	* cpphash.h: Prototype _cpp_calc_hash.
	* cppinit.c (initialize_builtins): Provide a valid hash
	to _cpp_make_hashnode, using _cpp_calc_hash.

	* cpphash.c (collect_expansion): # is not a special character
	in object-like macros.  In -traditional mode, /**/ is not
	token paste at the beginning or end of the line.
	* cpplib.c (do_include, do_import, do_include_next): If
	parse_include fails, return immediately.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32792 138bc75d-0d04-0410-961f-82ee72b054a4