* cpphash.h (IN_I): New flag for directive table.
	* cpplib.c (DIRECTIVE_TABLE): Mark #define, #undef, #ident, and
	#pragma with IN_I.
	(_cpp_check_directive): If -fpreprocessed, execute directives
	marked with IN_I.  Issue no warnings in this case.
	* cpplex.c (_cpp_get_token): Expand no macros if -fpreprocessed.

From-SVN: r35918