Create new ATLAS toolchains for 101_ATLAS_10 and 101_ATLAS_11
The layers are based on previous HepMC2 and HepMC3 layers.
Changes:
- Sherpa version is updated to 2.2.12
- Herwig and ThePEG versions are updated to 7.2.2 and 2.2.2
- crmc patch is updated and crmc now is installed with all header files
- evtgen bug in LCGCMAKE recipe not properly handling switch between HepMC2 and HepMC3 is fixed
- addede patch for ThePeg to pick up Rivet properly.