[RFA] Revised C++ ABI abstraction patches

[Andrew Cagney]

> Can I make them static inline functions, and keep them in the header,
> like the linux kernel does instead of macros?

Sad days are these when the Linux kernel is held up as an example of how
to improve a codes runtime performance ;-)

> Or should i just move them to functions in cp-abi.c?

This for now. As they say, get it running correctly and then get it
running fast :-)

	Andrew