Committed as obvious.

        * alpha-linux-tdep.c: New file.  Move alpha_linux_sigtramp_offset
        to here...
        * alpha-tdep.c: ...from here.
        * config/alpha/alpha-linux.mt (TDEPFILES): Add alpha-linux-tdep.o.

-- 
        -- Jason R. Thorpe <thorpej@wasabisystems.com>