Provide a default implementation of interprocess named semaphore functions (which just fail with PR_NOT_IMPLEMENTED_ERROR) if neither POSIX nor System V semaphores are supported.  Fixed an error in the comments.
Provide a default implementation of interprocess named semaphore
functions (which just fail with PR_NOT_IMPLEMENTED_ERROR) if neither
POSIX nor System V semaphores are supported.  Fixed an error in the
comments.

makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub,makotokato/nsprpub