Improvements on CMake generator.
* Suppress selected warnings on VC.
* Configurable directories (for CI server).
Remove TABs on CMake files.
CMake: Remove unsused variable, and revert a small change.
Merge pull request #672 from BeamNG/cmake_improvements

Cmake improvements
Fix AssertFatal/TORQUE_UNUSED are not optimized on release build causing performance problems.

http://cnicholson.net/2009/02/stupid-c-tricks-adventures-in-assert/
> "Both gcc and MSVC are smart enough to optimize out the evaluation of x, but only if they can determine if  there are no side effects associated with the evaluation.  Unfortunately, this can only be done if the body of x is known entirely to the compiler.  If x is a function call to another module MSVC can still make it go away with Link-Time Code Generation (via cross-module inlining), but poor gcc is dead in the water and emits the call.  Either way, we’re relying on compiler and linker optimizations to make this code go away."
Merge pull request #675 from BeamNG/fix_assertfatal_release_performance

Fix assertfatal/TORQUE_UNUSED release performance
Fixes for dedicated build on linux.

Thx @Bloodknigh for Signal fix.
Merge pull request #676 from BeamNG/fix_dedicated_linux

Fix dedicated Linux build.
Move CMake library's files to libraries dir.
Clean CMake files.
CMake changes for dedicated builds.
Fix for error on Clang compiler: reinterpret_cast from 'const void *' to 'FunctionType *' (aka 'void (*)(EngineObject *, const char *, const char *)') casts away qualifiers
         return R( reinterpret_cast< FunctionType const* >( /*const_cast<void*>*/(mFn) )( mThis, a, b ) );
Fix error on Clang compiler: 'ival' is a protected member of 'Dictionary::Entry'