Start improvement work on the CONTAM code

Begin work that will ultimately end with new unit tests, more
integrated code, and less dumb.
Streamline CONTAM object construction, add test
Simplify constructors for AirflowPath
Move CONTAM files to airflow subdir
Change Contam.i ifdef guards
Add surface network builder, rename files
Continue airflow renaming, add network build test
Flesh out surface network builder for CONTAM/AFN
Merge remote-tracking branch 'origin/contam-improvements' into airflow-network-builder

Conflicts:
	openstudiocore/src/airflow/CMakeLists.txt
	openstudiocore/src/airflow/PrjObjectsImpl.hpp
Add missed CONTAM test file
Streamline PlrLeak2 construction
Remove QVector from PRJ model
Switch to C++11 enum classes, add more tests
Help Qt find 64bit version from online installer
Enhance ability to find Qt on Windows
Roll back C++11 enums for CONTAM paths and zones
Fix example java and install location on Linux
Get correctly configured version of Qt packaging
Merge branch 'JavaV8BindingsUpdates' of https://github.com/NREL/OpenStudio into JavaV8BindingsUpdates
Remove debugging cmake message