GDB 7.6.90 available for testing

[Joel Brobecker]

> Joel, I did notice this -- not a regression, but a new test that fails:
> 
> gdb.ada/mi_interface.exp: Create ggg1 varobj: FAIL
> gdb.ada/mi_interface.exp: list ggg1's children: FAIL
> 
> 
> >From gdb.log:
> 
> -var-create ggg1 * ggg1
> ^error,msg="-var-create: unable to create variable object"
> (gdb) 
> 
> I didn't dig any deeper though.

My guess is that it's related to the compiler producing some
invalid debugging info. I will try to reproduce on my VM as
soon as I have a chance.

-- 
Joel