Virtual Temperature and Cp Star evaluators for the the moisture
equation of state (p=rho*R*Tv)
Modified virtual temperature.
Removed CpStar
Virtual temperature evaluator used in velocity and temperature equations.
Merge branch 'master' of software.sandia.gov:/space/git/Albany
Bug fix for virtual temperature
Added Pi (dPdeta) to pressure evaluator.
Clean up Aeras_XZHydrostatic_VirtualT.
Changed DensityWeightedVelx to PiVel.
Converted Albany from STK to STKClassic

Trilinos moved STK to STKClassic. This commit switches Albany's
use from STK to STKClassic, using a script that changed the
namespace.

To get Albany to work with Trilinos, your Trilinos script needs:
-  -D Trilinos_ENABLE_STK:BOOL=ON \
+  -D Trilinos_ENABLE_STKClassic:BOOL=ON \

Albany will soon be swtiching to the new STK in Trilinos, at which
point the required Trilinos configuration will change back.
Added comment to Aeras input file on time step to be used for longer time simulations to prevent blow-up
of the solution.
Filled out SPressure Residual with vertical sum.
Replaced Density with Pi in PiVel evaluator
Removed CpStar
Merge branch 'master' of software.sandia.gov:/space/git/Albany
Geopotential height field evaluator.
Implemented GeoPotential evaluator for XZHydrostatic equations.
- Created DeltaEta to aid in vertical differencing and summations.
- Added Parcing to EtaDotPi to get P0 and Ptop from input file.
Added GeoPotential term to momentum equation.
New evaluator for Omega (DP/Dt) in the Hydrostatic equations.
Fix mistakes in trilinos cmake fragments
Changed hopper-trilinos-cmake nightly test script to turn on STKClassic
instead of STK in master branch (only did this in tpetra branch before
so hopper nightly Trilinos build did not work).
Add requuired parameter