add tests for setxattr
setxattr: returning a PyObject* make it work
added xattr tests, replaced reserverd keywords
Merge branch 'master' into ioggstream_setxattr
added ValueError, more tests
C extension wrapped in module
added credit: fisgro
Merge branch 'ioggstream_setxattr'
Use pkg-config for smbclient include_dirs.
Small fixes for Python3.
Update build requirements in README.
Binding for smbc_set_credentials_with_fallback.
Small cleanups.