Build files were broken for unit test. Seems to difficult to try to kep
qgroundcontrol.pro and qgcunittest.pro in sync with each other. Instead
I made qgcunittest.pro just include qgroundcontrol.pro. This required
some tweaks to allow TARGET to be set from the outside as well as to
leave out main.cc. Also needed to modify qgroundcontrol.pri to use
TARGET instead of hardcoding app name. This way it can build either
qgroundcontrol.pp or qgcunittest.app. At this point only works on osx.

qgcunittest.pro now compiles and runs as long as run in terminal in projcts->Run Settings is unchecked.

I had to update some method calls in UASUnitTest.cc. I'd bet that some of the tests are wrong now because of it.

TODO: This should be altered to reuse stuff from qgroundcontrol.pro by including it instead of copy/paste.

Corrected the Windows Visual Studio compilation so that release builds no longer have a console or debugging macros while the debug builds have both.
Fixed indentation across all build scripts (.pro/.pri) to be 4-spaces and consistent.
Updated the README with proper Visual Studio compilation instructions for both VS2010 and VS2008.