re PR java/15543 ("jv-scan --complexity" segfaults)

re PR java/15543 ("jv-scan --complexity" segfaults)

	PR java/15543
	* parse-scan.y (input_location): Remove variable.
	(main_input_filename): New - replaces input_filename, which isn't
	settable if USE_MAPPED_LOCATION.
	* lex.c (java_init_lex): Wrap some more places in #ifndef JC1-LITE,
	so we don't reference input_location or wfl_operator in that case.
	* jv-scan.c (expand_location): Remove - no longer used.
	(main): Set main_input_filename rather than input_filename.

From-SVN: r94928