RFA: start of i18n

[Andrew Cagney]

> This patch adds some minor infrastructure required to let gdb use
> gettext for message translation.  Basically it works the same way as
> gettext does in bfd, gas, ld, etc.
> 
> No messages are actually translated at this point.  This just makes it
> possible to do so.
> 
> This causes no test suite regressions on Red Hat Linux 7.3.

I guess your stepping up to take the bat on this one (a nice suprise).

Can you perhaphs sketch out exactly what internationalizing GDB is going 
to entail?  So people, including me, can understand what we can expect 
to be comming our way.

Andrew