Dealing with multiple gas versions

[Hans-Peter Nilsson]

On Wed, 12 Oct 2011, Alan Modra wrote:
>  .ifndef __GAS_VERSION__

Before you carve that in stone, would it make sense to add a dot
in there to avoid any plausible clash with C macro/symbols?
Like __GAS.VERSION__ or something.

N.B. tc-cris.c:md_begin (BTW yes, I guess local symbols are
better).

brgds, H-P