compiler.
* Undo the diking out of cross compiler logic from gcc.c rev 1.16.
* Add the `CROSS_STARTFILE_PREFIX' knob.
* Add our own definition of `STANDARD_INCLUDE_DIR'. This should have been
included in freebsd-native.h rev 1.5.
* Minimize a little bit more, things we dike out in the FREEBSD_NATIVE case.
Submitted by: ru & obrien