help: show extension commands in short list, separate extension list in help
In 'hg', we now show a short list of commands, including extension commands.
In 'hg help', we show core commands, a list of enabled extensions, and topics.
patchbomb: mime-encode clean utf-8 patches (
issue814)
Fixes
issue814, but only for utf.
mail: mime-encode patches that are utf-8
utf-8 can be safely detected without making assumptions on the
encoding/locale used by the recipient.
Content-Transfer-Encoding for utf-8 patches is base64 (default of
python's email module).