merge changes from roostats development branch up to revision 44155

Modifications by Jakub Ademek and Max Baak :
	ensure that ToyMCSampler can return TTree with detailed fit output. 

	See for a detailed description: 
https://indico.cern.ch/getFile.py/access?contribId=0&resId=3&materialId=slides&confId=182211

Modifications by Sven Kreiss: 

ProfileLikelihoodTestStat:
- added option to add errors and pulls to detailed output
Revision 44128 - Directory Listing 
Modified Fri May 4 21:33:08 2012 UTC (2 days, 17 hours ago) by sven
ToyMCSampler, ToyMCStudy, SamplingDistribution, DetailedOutputAggregator:
- bugfixes for the naming of the result
- return toys with weight=1 when generating unweighted toys (not -1)
- make it optional to return errors and pulls with detailed output
- from Tim Adye: catch NaNs at the right place

ProfileLikelihoodTestStat:
- added option to add errors and pulls to detailed output

FrequentistCalculator (from Tim Adye):
- skip the profiling if there are no free nuisance parameters


--This line, and those below, wil

_M   roostats
_M   roostats/src
M    roostats/src/HypoTestResult.cxx
M    roostats/src/FrequentistCalculator.cxx
M    roostats/src/HypoTestCalculatorGeneric.cxx
M    roostats/src/RooStatsUtils.cxx
M    roostats/src/ToyMCSampler.cxx
M    roostats/src/ToyMCStudy.cxx
M    roostats/src/ProfileLikelihoodTestStat.cxx
M    roostats/src/SamplingDistribution.cxx
_M   roostats/inc
M    roostats/inc/LinkDef.h
M    roostats/inc/RooStats/ProfileLikelihoodTestStat.h
_M   roostats/inc/RooStats/ToyMCSamplerOld.h
M    roostats/inc/RooStats/FrequentistCalculator.h
M    roostats/inc/RooStats/HypoTestCalculatorGeneric.h
A  + roostats/inc/RooStats/DetailedOutputAggregator.h
M    roostats/inc/RooStats/RatioOfProfiledLikelihoodsTestStat.h
M    roostats/inc/RooStats/ToyMCStudy.h
M    roostats/inc/RooStats/TestStatistic.h
M    roostats/inc/RooStats/SamplingDistribution.h
M    roostats/inc/RooStats/HypoTestResult.h
A  + roostats/inc/RooStats/MinNLLTestStat.h
M    roostats/inc/RooStats/RooStatsUtils.h
M    roostats/inc/RooStats/ToyMCSampler.h


git-svn-id: http://root.cern.ch/svn/root/trunk@44157 27541ba8-7e3a-0410-8455-c3a389f83636