support for i386-pc-nto-qnx* target

[Neil Booth]

Zack Weinberg wrote:-

> Also, new ports should not create any assertions

I know you want to get rid of assertions, but are you aware that
they are specified as part of the Itanium C++ ABI?

They work as GCC assertions work, but they list

#assert cpu

as a valid syntax (a zero-token answer), but don't permit

#if #cpu

which admittedly always seemed kinda pointless to me.

I believe EDG follows these semantics.

Neil.