* gcc.c: Document %{, in big comment at top.
(input_suffix_matches): Remove special handling for .s and
.S.
(input_spec_matches): New.
(handle_braces): Handle %{,.
(validate_switches): ',' indicates a value which is not a switch.
* config/alpha/osf.h (ASM_FINAL_SPEC): Use %{, rather than %{.
to detect assembler input.
* config/i386/sol2.h (CPP_SPEC): Likewise.
* config/rs6000/sysv4.h (ASM_SPEC): Likewise.
* config/rs6000/vxworks.h (ASM_SPEC): Likewise.
* config/rs6000/lynx.h (ASM_SPEC): Likewise.
* config/rs6000/linux64.h (ASM_SPEC_COMMON): Likewise.
* config/i386/darwin.h (DARWIN_MINVERSION_SPEC): Objective-C plus
-m64 causes deployment target to default to 10.5.
* config/rs6000/darwin.h (DARWIN_MINVERSION_SPEC): Likewise.
From-SVN: r122783
