Win apps hang in most API calls.

prt.h has an invalid portability macro for posting to a semaphore.  PRT_SEM_POST() has an ampersand in front of _s.  This causes lbmct_ctrlr_cmd_submit_and_wait() to never wake up.  Most API calls use that function.

Solution is to remove the ampersand from PRT_SEM_POST().

