native gcc for vxworks

[DJ Delorie]

> A hosted gcc doesn't require a full unix environment.  The difference 
> is the difference between making gcc and binutils work, versus making 
> those work, plus /bin/sh and perl and awk and insert 400 other nice 
> host programs here.
> 
> I've seen gcc hosted on an MSDOS box treated as a target board.

Heck, DJGPP isn't a full unix environment unless you try real hard,
cross your eyes, and overlook a few glaring differences ;-)

Yet we've had a hosted GCC since 1989.