Create ql calculation function
Added the name of the class for easier interfacing
Merge remote-tracking branch 'origin/thijs' into chiel

Conflicts:
	include/thermo_moist.h
	src/stats_les.cxx
	src/thermo_moist.cxx
Make the thermo available in the surface model
Pass the mutual dependencies between classes in the beginning to prevent
complex function arguments
Added new interfacing functions for buoyancy properties
Added a function to calculate buoyancy without liquid water
Added a initial perturbation for qt in bomex ini
Added a function for computing the buoyancy flux
Put correct surface pressure BOMEX
Vectorizable pressure calculation functions
Added interface function for buoyancy
Create empty function for getbuoyancy in thermo to avoid linking errors
Fixed error in surface ql calculation
Removed the buoyancy parameter multiplications
Added buoyancy calculation functions for the dry thermo
Calculate the buoyancy over the entire vertical profile
Fixed the boundary conditions for momentum to the BOMEX specs and
increased the surface thv
Added statistics file for BOMEX and stick to the runtime specs
Fixed small error in bomex ini file