Changes the semaphore API so that the timeout parameter must be specified
when invoking task_sem_group_take() thereby obsoleting the following APIs:
task_sem_group_take_wait()
task_sem_group_take_wait_timeout()
_task_sem_group_take()
Change-Id: I64e3f4c9f1e74a86b49d4a0e55b82ecee7733220
Signed-off-by: Peter Mitsis <peter.mitsis@windriver.com>