[#83818422] Separate radiance/energyplus packaging

-Splits PACKAGE_ENERGYPLUS_AND_RADIANCE into PACKAGE_ENERGYPLUS and
PACKAGE_RADIANCE.
-Passes new options down to OSCore
-Cleans up some path walking code to deal with recent-ish changes to
installation folder layout
Merge remote-tracking branch 'origin/83818422-SeparateEnergyPlusRadiancePackaging' into 79954160-EnergyPlus-8-2-0
Improve package_energyplus/rad option

1) Remove package_energyplus and package_radiance as options in the
super project.
2) In the core project make package_energyplus an option that is
defaulted on.  Make package_radiance an option that is defaulted off.
3) Use the found energyplus_dir as the location of EnergyPlus that is
packaged.  Leave radiance_location as a cache option that will control
which radiance is packaged.
4) Dont copy energyplus and radiance installs into the build directory
before issuing install commands.  Instead just install directly from the
found location.

[#79954160]