Allow query of current role and dynamic cms state via kXR_query.
Update notes on kXR_query enhancement.
[XrdSys] Safe Linux Semaphore, take one
[XrdCl] Make the new client use the private semaphore implementation
Fix potential buffer overrun introduced by query config patch.
[XrdSys] Refactor LinuxSemaphore for more clarity
Merge branch 'master' of github.com:xrootd/xrootd into ofsclose