Problem:    has('python') may give an error message for not being able to load
            the library after using python3.
Solution:   Only give the error when the verbose argument is true.

Problem:    Python 3: vim.error is a 'str' instead of an 'Exception' object,
            so 'except' or 'raise' it causes a 'SystemError' exception.
            Buffer objects do not support slice assignment.
            When exchanging text between Vim and Python, multibyte texts become
            gabage or cause Unicode Expceptions, etc.
            'py3file' tries to read in the file as Unicode, sometimes causes
            UnicodeDecodeException
Solution:   Fix the problems. (lilydjwg)

Problem:    Can't build with Python dynamically loading.
Solution:   Add dll_PyType_Ready.

Problem:    Crash with ":python help(dir)". (Kearn Holliday)
Solution:   Fix the way the type is set on objects. (Tobias Columbus)

Problem:    Python doesn't work properly when installed in another directory
            than expected.
Solution:   Figure out home directory in configure and use Py_SetPythonHome()
            at runtime. (Roland Puntaier)

Problem:    Win32: may be loading .dll from the wrong directory.
Solution:   Go to the Vim executable directory when opening a library.

both may work.