* c-common.c (preprocessing_asm): New macro.
	* c-lex.h (builtin_define, builtin_assert): Use pfile.
doc:
	* tm.texi: Update.
config/alpha:
	* alpha.h (CPLUSPLUS_CPP_SPEC): Remove.
	(CPP_SPEC): Simplify.
	(TARGET_CPU_CPP_BUILTINS): Update.
	* freebsd.h (TARGET_OS_CPP_BUILTINS): New.
	(CPP_SPEC): Simplify.
	* linux.h (CPLUSPLUS_CPP_SPEC): Remove.
	(TARGET_OS_CPP_BUILTINS): Update.
	* osf.h (CPP_XFLOAT_SPEC): Kill.
	(TARGET_OS_CPP_BUILTINS): Update.
	(CPP_SUBTARGET_SPEC, SUBTARGET_EXTRA_SPECS): Simplify.
	* osf5.h (CPP_XFLOAT_SPEC): Kill.
	* vms.h (CPP_SUBTARGET_SPEC): Kill.
	(TARGET_OS_CPP_BUILTINS): Update.

From-SVN: r53641