* lang/python/src/core.py: Adjusted new_from_estream function to alias
new_from_stream instead of fd.
* fixed the _gpgme import errors introduced in commit
08cd34afb762975b0273575035dacf69449ef241 by changing the exported
functions/types to match the inner module where all the work is
done, rather than the outer one(s).
Tested-by: Ben McGinnes <ben@adversary.org>
Signed-off-by: Ben McGinnes <ben@adversary.org>