Use StatusEntry class instead of repeated status line parsing.
This small cleanup abstracts out repeated instances of
(rev, name) = applied[x].split(':'), making it easier to use
applied or change the status file format.
adding foo
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
pushing to ../2
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files