From Fabio Hernandez:
The class TS3WebFile was modified to support also reading files hosted by
Google using the S3 protocol. Its TFile plugin was also modified to reflect
this. The class TS3HTTPRequest is new.


git-svn-id: https://root.cern.ch/svn/root/branches/v5-34-00-patches@48690 27541ba8-7e3a-0410-8455-c3a389f83636