install dlls on Windows
suppress extra GCC warnings on Windows
install only .dll (without .dll.a)
* link VCMI with libgcc statically
* copy winpthread to install folder
* copy libgcc to install folder because Qt5 linked with libgcc dynamically
Add -Wno-unused-local-typedefs instead of suppress all warnings
disable one more warning (strict-aliasing)
disable one more warning (type-limits)
disable fPIC for windows
* remove static linking for libgcc
* fix clang warnings
Merge pull request #27 from Mixaill/cmake-2

Make CPack functional on Windows