*-*-rtems* missing cpp define

Hi,

The *-*-rtems* patches are checked in now.
Thanks. But there is a minor issue.
__rtems__ is not defined.

clang -ccc-host-triple i386-rtems4.11 -ccc-gcc-name i386-rtems4.11-gcc -dM -E - </dev/null | grep -i rtems

The code in question is in
tools/clang/lib/Basic/Targets.cpp around line
1670. I have checked it against what other
OSes do and don't see anything obvious.

Does anyone see what is wrong?

Thanks.

Try r134532.

-Eli