Fix SEGV when freeing the DS/DI arguments.
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.
[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.
[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
[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
[Man] Update the xrdcopy man page
Use corresponding struct name in memset size to clear the whole area.
Remove errant 'using namespace std'.
Initialize the 'myFile' variable in the Reset function when a protocol object get's recycled
[XrdCl] Make it possible to tweak log settings in the default env
[XrdCl] Add errDataError type
[XrdCl] Fail and report error on size mismatch
Strip off opaque information from dest filename when copying to local filesystem.