convert/svn: refactor svn_source.latest() with a nested function
We will call it more than once for reasons detailed later.
convert/svn: clarify svn_source.latest() stop arg default value
stop=0 could pass for a valid default value at first sight.
factotum: rename mount and path configuration entries
The factotum extension used mount and path entries which were too
generic. These have been replaced by mountpoint and executable
(respectively) to match existing conventions.
Added signature for changeset
d9e2f09d5488