Disable 'treat warning as errors' for tests.
MSVC2013 initializer_list is rather buggy. Don't abuse then too much.
Don't try to use bisonc++ and flexc++ on windows.
Also, implement the move constructor/assignment for SType on the fly on MSVC, since it doesn't have a default one.
iso646.h for not/and/similar.
Merge pull request #26 from ouroboros-project/msvc_fixes

Visual Studio 2013 Workarounds