Introduce the TUNDRA_NO_BOOST option to CMakeLists.txt.
Take TUNDRA_NO_BOOST into consideration in CoreTypes.h when defining the typedefs for fixed-width types.
Take TUNDRA_NO_BOOST into consideration in Math's and TundraCore's CMakeLists.txts.
Introduce the Boost workaround by using the using declarations in CoreTypes.h. In the near future one is not allowed to use f.ex. "boost::shared_ptr" in the code, but "shared_ptr" instead.