From: "alan buckley"
Subject: SDL Improved semiphore implementation for RISC OS (version 2)

I've attached a new version of the patch for the RISC OS
semaphore processing (in a zip file) that updates it to use
the improved semaphores support in UnixLiib.

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401100