[PYOPENMS,FIX] fixed streampos->long conversion
Merge pull request #750 from uweschmitt/fix/pyopenms_streampos_conversion

[PYOPENMS,FIX] fixed streampos->long conversion
[FIX] typos in the CMake file
Merge pull request #775 from hroest/fix/typos

[FIX] typos in the CMake file