Merge branch 'WIP_Sayankotor' into '2018-patches'

new pi0 gamma separation tool

See merge request !1087

(cherry picked from commit ce64cc09)

c554235d commit
7370fb88 GammaPi0 XGBoost
1ddc1b2c add tool
8e2cd460 test commit
a3d24ddc fix build failed
d125a57b clean output
303e4e99 estimator
8172daee delete new tool from execution
1f23d62d static to multi thread
a0af0e23 new parameter in CaloDataType
a87da837 fix
fa8e0cd7 model file replacement to cur dir: code
572f7b97 model file replacement to cur dir: big files
d501fd29 big files to param files
73932772 test commit
2d157395 commit
28e793bf commit
b313400d commit
390df5d1 commit
edce981a commit
dacd4931 fix
2f7be1e6 restore
828d5104 restore
58667a86 restore
471200e2 commit
27306127 commit
4a5cc7d3 delete message declare tool component empty string
7b64f6d0 messages
e8565d6b gaudi::property, delete message fron cmake
ce60ef8a Fixes to the xgboost finding procedure
db65d90d Added FindXGBoost.cmake and updated configuration and files accordingly
acb17f2e added Calo/CaloTools from Rec (Rec/WIP_Sayankotor)
c1d6414a new name of classifiers in ParamFiles
eba36420 deleting trash
f1573444 add switch, check full_digit, getDetIfExist -> getDet
08acf780 delete geometry, cell hash, multiple initialization, warnings
a0cbab87 restore CaloDataType::DataType::
9a0f3c15 warning fix
79115953 removed GammaPi0XGBoostTool_restore.cpp
f6dbe480 fixed missing right path to XGB
c3dc26c5 delete in unlikely