wireproto: use command executor for unbundle...
wireproto: use command executor for unbundle
This also required unifying the name of the argument because the
new API always passes arguments by keyword. I decided to change
implementations to "bundle" instead of the interface to "cg"
because "bundle" is more appropriate in a modern world.
Differential Revision:
https://phab.mercurial-scm.org/D3314
