-fabi-version option failures on AIX

[Neil Booth]

David Edelsohn wrote:-

> 	I am seeing some new C++ failures that seems to be do to testcases
> invoking the C compiler instead of the C++ compiler, which does
> not support the -fabi-version option:
> 
> FAIL: g++.dg/abi/bitfield6.C (test for excess errors)
> FAIL: g++.dg/abi/empty11.C (test for excess errors)
> FAIL: g++.dg/abi/empty8.C (test for excess errors)
> FAIL: g++.dg/abi/vbase12.C (test for excess errors)
> FAIL: g++.dg/abi/vbase13.C (test for excess errors)
> 
> All report
> cc1: error: unrecognized option `-fabi-version=0'

I'm not 100% sure, but I don't think this relates to my changes.  C/C++
has had new-style option handling for a while, so if I broke it I 
would expect it to have been broken for almost a year.

Neil.