cpphash.c (macroexpand): Delete leading whitespace when arg is concatenated before.

cpphash.c (macroexpand): Delete leading whitespace when arg is concatenated before.

Wed Aug  4 13:29:23 1999  Zack Weinberg  <zack@bitmover.com>

	* cpphash.c (macroexpand): Delete leading whitespace when arg
	is concatenated before.
	(unsafe_chars): Correct test for whether + and - can extend a
	token.

	* cppinit.c (cpp_start_read): Do dependencies for
	-include/-imacros files also.

	* cpplib.c (cpp_scan_buffer): In no-output mode, don't bother
	tokenizing non-directive lines.
	(cpp_expand_to_buffer): Temporarily disable no-output mode.
	* cppmain.c: In no-output mode, just call cpp_scan_buffer for
	the input file.

From-SVN: r28512