Fix race condition when adding a new channel to a poll set. This only affected
MacOS. Revert the timeout mutex to be a simple non-recursive mutex. Produce
an event trace when the envar XrdSysIOE_TRACE is set.
Update notes on XrdSysIOEvents patch.
[XrdCl] Set proper socket status when async connection returns immediately

This affects Solaris (always) and MacOSX (rarely) when connecting
to a server located at localhost.
Add the StatPF method to the oss plugin. This is used by the frm for
performance reasons if it as actually implemented.
Resolve naming conflicts within the frm that resulted from the
statlib plugin implementation.
Update release notes on oss patch and frm patch (both are related).
[XrdClient] fix a strict-flags compilation issue when using gcc on mac
[XrdCl] Use big enough integer to calculate fatal error window and remember last fatal error
[XrdCl] Make sure to try all available authentication options before failing
[XrdCl] Pass url username and password to the security layer
[XrdCl] Make sure that the fork handler and file timer exist before unregistering objects

This is a problem when integrating with ROOT and triggering the garbage
collector in the library finalizer.
[XrdCl] Fix more ROOT garbage collector insanity
[XrdCl] Fix one more ROOT garbage collector issue
[CMake] Install XrdOucIOVec.hh
[XrdCl] Fix one more ROOT garbage collector issue
[XrdCl] Avoid favoring writes to reads when using the built-in poller

In extreme cases this may starve out the reads completely.
[XrdCl] Fix minor memory leak
[XrdApps] Add --mkpath option in XrdCpConfig to allow "mkdir -p" like behaviour when copying to a local target
Merge branch 'master' of git://github.com/xrootd/xrootd into upstream