[patch,rtems] Add more stub functions to rtems/crt0.c

[Jeff Johnston]

Ralf Corsepius wrote:
> Hi,
>
> The fact RTEMS now uses newlib's posix/ and unix/ directory, requires
> RTEMS libc/sys/rtems/crt0.c to be extended.
>
> Ralf
>
>
>   
Patch applied.

-- Jeff J.