bytecode files in py_compile.

Thanks to Arfrever Frehtes Taifersar Arahesis for the bug report.

environment variable name (str on UNIX), instead of using the encoded name
(bytes on UNIX).

variable name (str on UNIX), instead of using the encoded name (bytes on UNIX).

integers where appropriate.  Initial patch by Serhiy Storchaka.

PyErr_SetFromWindowsErrWithFilenameObject, and
PyErr_SetExcFromWindowsErrWithFilenameObject.

Note that PyErr_SetExcFromWindowsErrWithFilenameObjectAndSomeOtherParametersSoThatTheNameGetsSoLongThatNobodyIsEverGonnaUseThisStrangeFunctionForAnything is still undocumented.