Change RTEMS GCC Thread model to POSIX.

[Ralf Corsepius]

On 08/12/2013 03:41 PM, Gedare Bloom wrote:
> Is anything lost by going to POSIX threads in GCC?

RTEMS has been using native RTEMS threads in GCC.

The purpose of this had been:
- Avoiding to have POSIX support hard-wired into RTEMS.
- Code Size (RTEMS POSIX threads are wrappers around RTEMS threads).

Because of these reasons, similar proposals had been rejected before.

Ralf