Fix muToLumi value, switch for online default mu values (LumiBlockComps-01-00-27)

	* Fix missing muToLumi value for offline-only lumi algorithms
	* Add switch to allow online to get invalid lumi values
	* Tag as LumiBlockComps-01-00-27

2016-02-24 Will Buttinger <will@cern.ch>
      * cmt/requirements: made getLumi compile after main library, to stop cmt failure in nightlies
      * Tagging as LumiBlockComps-01-00-26

2016-02-22 Will Buttinger <will@cern.ch>
       * Root/LumiBlockMetaDataTool: reduced verbosity of some of the logging messages
       * util/getLumi.cxx : new standalone application to get the lumi of a set of xAOD or D3PD
       * Tagging as LumiBlockComps-01-00-25


Former-commit-id: 7737dd0d05f3ad81475f2b6ac2df3028fd97bd9a