cpphash.h (struct lexer_state): Add directive_wants_padding.

cpphash.h (struct lexer_state): Add directive_wants_padding.

	* cpphash.h (struct lexer_state): Add directive_wants_padding.
	* cpplib.c (_cpp_handle_directive): Set directive_wants_padding
	for directives of type INCL.
	(glue_header_name, parse_include): Use get_token_no_padding.
	* cppmacro.c (replace_args): If directive_wants_padding,
	provide padding tokens.

	* testsuite/gcc.dg/cpp/include3.c: New test.
	* testsuite/gcc.dg/cpp/inc/foo.h: New file.

From-SVN: r63231