GeProcessor local dammids changed.
Added gamma-gamma angular and gamma-gamma-gamma gates to GeProcessor.

New flag GGATES in Makefile to enable/diable this feature.
Implementation not tested yet but copied from working version.
DeclareHistogram function updated to follow consistent scheme.

Raw event pixieEnergyContraction parameter changed to 4 (leribbs
experiments).
Bug fixes plus GeProcessor tidying.

More verbose error messages from Plots class. GeProccesor dammIds
rebuild to use explicite numbers instead of offsets and modifiers.
Multiple plot ids were doubled in previous scheme.
List of non-empty histograms.

Deconstructor of each processor prints to file list of non-empty
histograms. Efficiency to be tested yet.
Reintroduced 'early' and 'late' (verus decay cycle) coincidences.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	include/DammPlotIds.hpp
	src/DetectorDriver.cpp
	src/RawEvent.cpp
New correlator added.

Initial commit to new correlator branch.
Work on new correlator.

But stopped in messy global variables...
Save before adding correlator to EventProcessor class.
Correlator added to Ge and Beta.
NewCorrelator in sigleton scheme implemented.

GeProcessor cleared, mtc and scint needs some work, but system works
(some parts still use old correlator).
Working. Needs some cleaning.

ScintProcessor and MtcProcessor fully moved to new correlator scheme.
NewCorrelator renamed to TreeCorrelator.

ScintProcessor class broken into Beta-, Neutron- and Liquid-
ScintProcessors. Tree correlator fully implemented in Ge, all Scint and
Mtc processors.
GeProcessor cleared a bit.

Timing spectra loops merged into main loop.
Merged correlator branch.
Add *.ldf and *.his to .gitignore
Bug fixes.

* PlotsRegister : reworked singleton implementation
* Plots : PlotsRegister is not static field
* ReadBuffData.RevD.cpp : remove saturated events to channel 16000
* GeProcessor.cpp : move procedure checking number of clovers in the
            system to the DeclarePlots (called before Init)
* TraceAnalyzer and inherited classes, fixes in calls to base class
            Plots

Plus some work on Ge4Hen3Processor
Including files omitted in previous commit.
Work on 3Hen.