[RFC] Let's kill specs, completely rewrite gcc.c

[Per Bothner]

"Joseph S. Myers" <jsm28@cam.ac.uk> writes:

> Would this also include a cleanup of the argument parsing in toplev.c and
> lang_decode_option?

Can we separate out the table of options from gcc.c and place it
in a separate file so toplev.c etc could use it?  This file might also
include some of the utility routines, like the function that does a
binary search on an option name.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/~per/