Recent cafe modifications

• p21-br-37 Apr 22, 2010:
  add a class to report DataEpochs to cafe
  
• p21-br-33 Jan 22, 2010:
  Update to use new root. Some debugging: Add exception if SelectUserObjects trying to find non-existing branch.
  Add tags to Stat printout
  Add MC specific metadata generation to Write processor.
  
  
• p21-br-28 February 20, 2009 Set PartialRead flag to false by default.
• p21-br-27 November 11, 2008 Add StatusFileProcessor.
• p21-br-26 November 9, 2008 add possibility to decode config instruction like %{...%{...}...}
• p18-br-143, p21-br-25 Apr 4, 2008 Update partial reads to allow schema evolution.
• p18-br-141, p21-br-24 Mar 13, 2008 Add Collection and Collection to root dictionary.
• p18-br-140, p21-br-23 Feb 28, 2008 print average weights value after final selection in output html file
• p18-br-139, p21-br-22 Jan 28, 2008 New functionality to edit path names before seeding
• p18-br-138, p21-br-21 Jan 15, 2008 add sumw2 to histogram processors
• p18-br-137, p21-br-20 Dec 16, 2007 Fix crash in Write processor
• p18-br-136, p21-br-19 Dec 14, 2007 Add accessors for TMBFPDTrack and TMBTdc.
• p18-br-135, p21-br-18 Dec 11, 2007 EventBase: add accessors for variables saved in the event. Add accessor to treeName in SelectUserObject
• p18-br-134, p21-br-17 Nov 14, 2007Write: Add config parameters .RootMaxTreeSize, .MaxEventsPerFile, and .MaxBytesPerFile.
• p18-br-133, p21-br-16 Oct 2, 2007 Add SAMGridExpander.
• p18-br-132, p21-br-15 Aug 22, 2007 Add include in RandomProcessor. Update Trigger processor: handle branch TMBTrigBits; keep track of statistics; Inverse logic. Sync branches.
• p18-br-131, p21-br-14 Aug 15, 2007 update Event.hpp
• p18-br-130 Aug 8, 2007 Functionality of having reproducible random numbers
• p18-br-129 July 4, 2007: Correct itest.sh
• p18-br-128 May 9, 2007: Add methodes isMC(), isRunIIb(), isRunIIa().
• p18-br-126 Apr 4, 2007: Add exception if trying to write to the existing branch with SelectUserObject. Add exception to Stat if accessing non-existing weight.
• p18-br-125 Apr 3, 2007: Add veto option in EventFlags processor.
• p18-br-124 : Correct a bug in the treatment of empty strings.
• p18-br-123 : Throw exception in Stat if weight was not found.
• p18-br-121 : Systematics intefaces updated in Stat
• p18-br-120 : Remove space in the end of the config string. Add accessor to the config variables for the given Processor.
• p18-br-119 : Throw exeption if the output directory is not existing
• p18-br-118 : Add modifications for the HighPt object format
• p18-br-117 : IfPr processor: Add Tag/Untag options
• p18-br-116 : Stat processor: add printout for the weight systematics
• p18-br-115 : Flag for SelectUserObject to not load the full branch
• p18-br-114 : Correct bad cells treatment for the SCA calorimeter problem
• p18-br-113 : Fix bug in the IfPr processor
• p18-br-112 : Add cafe::Event pointer as data member to the SelectUserObject
• p18-br-111 : Delay resolving variables in Config
• p18-br-110 : Add access to the event in the Selected UserObject class.
• p18-br-109 : Return Collection from LeBob
• p18-br-108 : Allow negative weight in the statistics processor (StatWeight class.
• p18-br-107 : Use dynamic_cast instead of static_cast when checking for TBranchElement
• p18-br-106 : Write processor: fix metadata parentage when using %n output file name
• p18-br-105 : Change Config parser variable replacement.
• p18-br-104 : new variable replacement in Config
• p18-br-103 : make file finder class useful after 1.5 years
• p18-br-102 : explicitly re-read subbranches instead of GetEntry()
• p18-br-101 : add cafe.SkipFiles: option
• p18-br-100 : Fix weight saving in StatSample
• p18-br-99 : Fix SelectUserObject assignment to Variables objects
• p18-br-98 : Fix explicit constructor for Variables