* cppexp.c: wrap long lines. New macros CPP_ICE, SYNTAX_ERROR

	* cppexp.c: wrap long lines.  New macros CPP_ICE, SYNTAX_ERROR
	and SYNTAX_ERROR2. Replace `' in messages with ''.
	(op_to_str): Make re-entrant.
	(_cpp_parse_expr): Implement new error macros. Use | rather
	than || to logically or 2 boolean integers.  Simply expression
	checking we have a left operand iff needed.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@32890 138bc75d-0d04-0410-961f-82ee72b054a4