[PATCH v2] Add support for O32 FPXX ABI

[Matthew Fortune]

On the topic of the testsuites (in particular the linker). Do you have any strong feelings as to whether I should always just update the expected output if affected by the introduction of .gnu.attributes, .MIPS.abiflags or the PT_MIPS_ABIFLAGS header? The alternative (for some tests) is to modify the link script to just discard .gnu.attributes and .MIPS.abiflags.

I'd like to do a bit of both personally. The program header and .MIPS.abiflags section will be checked at least once for each ABI though of course.

Regards,
Matthew