GDB `cannotfix' pr state, require PR with xfail `moving forward'.

[Michael Elizabeth Chastain]

Andrew C writes:
> If the bug is fixed in GCC we might as well indicate this by closing our 
> side of the bug report.  No reason to hang onto a bug report that has 
> been resolved.

Does this include the XFAIL's for gcc v2 stabs+ in gdb.base/constvars.exp?

I really think that it's a year too early to close a gdb bug report
with gcc 2.95.3 by saying "it works if you use gcc 3.X".

But, okay, in that case, I'll stop testing with gcc 2.95.3.  Because
any bugs that I find with gcc 2.95.3 that do not manifest with gcc 3.2.1
would just get closed with "fixed in gcc 3.2.1".

Michael C