Binutils 2.13 branch created

[Ben Elliston]

> There is one test failure on my i386-linux host (gasp flonums) which I
> believe has been there for a while; I'd like to have either the problem
> or the test fixed in the next week or so, if anyone wants to step up.  
> As usual, feel free to fix problems on the branch until we freeze it;
> I'd appreciate being CC'd on any branch patches.

I wrote this test earlier in the year and it should definitely pass.  I 
can take a look at it, if you like?

Ben