* config.gcc (tm_file): Add linux.h for bfin*-uclinux*.
	(tm_defines): Define UCLIBC_DEFAULT to 1.
	(extra_options): Add linux.opt.
	* config/bfin/linux.h (CPLUSPLUS_CPP_SPEC): Don't define.
	(CRT_CALL_STATIC_FUNCTION): Likewise.
	(NO_IMPLICIT_EXTERN_C): Likewise.
	(TARGET_OS_CPP_BUILTINS): Define as LINUX_TARGET_OS_CPP_BUILTINS.
	* config/bfin/elf.h (OBJECT_FORMAT_ELF): Don't define.
	* config/bfin/uclinux.h (CPLUSPLUS_CPP_SPEC): Don't define.
	(ENDFILE_SPEC): Don't define.
	(LIB_SPEC): Likewise.
	(CRT_CALL_STATIC_FUNCTION): Likewise.
	(NO_IMPLICIT_EXTERN_C): Likewise.
	(LINUX_TARGET_OS_CPP_BUILTINS): Likewise.
	(TARGET_OS_CPP_BUILTINS): Define as LINUX_TARGET_OS_CPP_BUILTINS.

From-SVN: r128163