* c-parse.in (_yylex): Remove CPP_BACKSLASH case.
	* cp/spew.c: Similarly.
	* cpplex.c (_cpp_lex_token): Backslashes are now CPP_OTHER.
	* cppmacro.c (stringify_arg): Similarly.
	* cpplib.h (CPP_BACKSLASH): Delete.

From-SVN: r37182