tests/test-filecache.py.out

subrepos: abort commit by default if a subrepo is dirty (BC)

This changeset flips the default value of ui.commitsubrepos setting
from True to False and adds a --subrepos flag to commit.

The commit, status, and diff commands behave like this with regard to
recusion and the ui.commitsubrepos setting:

          | recurses      | recurses
          | by default    | with --subrepos
  --------+---------------+----------------
  commit: | commitsubrepo | True
  status: | False         | True
  diff:   | False         | True

By changing the default from True to False, the table becomes
consistent in the two columns:

* without --subrepos on the command line, commit will abort if a
  subrepo is dirty and status/diff wont show changes inside subrepos.

* with --subrepos, all three commands will recurse.

A --subrepos flag on the command line overrides the config settin.g

basic:

creating
creating
creating
creating

fakeuncacheable:

creating
creating
creating
creating
creating
creating