Import from the XROOTD head:
        - support for openssl 1.0.0 (required by Fedora 12)
	- fixes in the client (consolidation of readv, cache performance improvements)
        - fixes, optimizations in cmsd and cnsd (performance improvements)
	- force 32-bit build for xrootd on OpenSolaris (as for ROOT).
		  
   NB: make distclean-xrootd may be needed on Windows after update before make.


git-svn-id: http://root.cern.ch/svn/root/trunk@31508 27541ba8-7e3a-0410-8455-c3a389f83636