MSVC 2015 doesn't support raw strings that contain the sequence \"
(U+005C REVERSE SOLIDUS, U+0022 QUOTATION MARK) and fails to compile
with error C2017.
GTest does not ship precompiled binaries anymore. They are now compiled
using the CMakelists.txt from gtest.
Add basic unit tests for C4Value, DirectExec and C4StringTable.