Porting to MinGW + Deploy Settings for Qt 5.2.0.

-> Auto generated QtWindow class (mainwindow) added.
-> Auto generated main.cpp (+ smoke test run)
-> Removed VS libgsl libraries
-> Added MinGW libgls library
-> Ported FunctionCalculator to muParser
-> Added static linked muParser libraries
-> Removed exprtk library
-> Removed Visual Studio Project Files.
-> Created DeploySetRelease
-> MinGW warning fixes (besides of FIXME parts)
-> MinGW compilation fixes.