Create a new header lto-section-names.h

Create a new header lto-section-names.h

       gcc/
        * config/darwin.c: Include "lto-section-names.h".
        (LTO_SEGMENT_NAME): Don't define.
        * config/i386/winnt.c: Include "lto-section-names.h".
        * lto-streamer.c: Include "lto-section-names.h".
        * lto-streamer.h (LTO_SECTION_NAME_PREFIX): Don't define.
        * lto-wrapper.c: Include "lto-section-names.h".
        (LTO_SECTION_NAME_PREFIX): Don't define.
        * lto-section-names.h: New file.
        * cgraphunit.c: Include "lto-section-names.h".

        gcc/lto/
        * lto-object.c: Include "lto-section-names.h".
        (LTO_SEGMENT_NAME): Don't define.
        * lto.c: Include "lto-section-names.h".

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@210819 138bc75d-0d04-0410-961f-82ee72b054a4