Merge pull request #691 from smuzaffar/IB/CMSSW_5_3_X/slc6_amd64_gcc472

updated config tag to V05-01-27-00
included latest fixes from 71x branch
included latest fixes from 71x branch
Update xrootd to 3.2.4.
Merge pull request #698 from degano/xrootd_updt_53x_slc6

Update xrootd to 3.2.4.
explicilty pass -Iopenssl/include otherwise for building net/net it is not including openssl include directory