[commit] Match function pointer types in mi-var-display.exp

[Michael Elizabeth Chastain]

> Function pointers were being displayed in GDB's output with their argument
> types, and the test script expected them without.  I believe that this is a
> progression in GCC's debug output - I'm using 3.3.  We still accept the ()
> form, because stabs doesn't express this information.

gcc has been that way with dwarf-2 since gcc 2.95.3 and gcc 3.0.4.

The new mi*-var-display.exp work for me!

Michael C