RFA: Treat Thumb PLT branches as wide

[Nick Clifton]

Hi Richard,

> gas/
> 	* config/tc-arm.c (do_t_branch): Treat (PLT) branches as wide.
>
> gas/testsuite/
> 	* gas/arm/plt-1.s, gas/arm/plt-1.d: New test.

Approved for the mainline - please apply.  Check with Tristan for the 
branch.

Cheers
   Nick