[PATCH] Disable gdb configuration on hpux

[Nicholas Clifton]

Hi Dave,

> The removal of HPUX from the gdb directory broke building binutils, etc, on HPUX.  The attached
> change disables configuration of gdb on HPUX.
>
> Tested on hppa2.0w-hp-hpux11.11 and hppa64-hp-hpux11.11.
>
> I'm not 100% sure that I can install to the binutils-gdb git tree, so please install if okay.

Approved and applied.

Cheers
   Nick