committed: merge with libada-branch

[Arnaud Charlet]

> But it is not supposed to work like this as this is a huge regression.
> Now I do not have an Ada compiler to beginning with so a configure will 
> disable Ada but not libada like it should.

That's not how it's supposed to work.
Are you sure you have an up-to-date gcc/ada/config-lang.in file ?

If yes, that seems to be specific to your set up, and I'd suggest
opening a PR in bugzilla, and giving more info (such as the
configure option and configure output).

Arno