unshelve: rename _dounshelve() to dounshelve()

This is a follow-up patch to 3de4f17f4824.

Differential Revision: https://phab.mercurial-scm.org/D6605

mercurial/commands.py

@@ -6209,7 +6209,7 def unshelve(ui, repo, *shelved, **opts)
        prevents from deciding exact order of them, for safety.
     """
     with repo.wlock():
-        return shelvemod._dounshelve(ui, repo, *shelved, **opts)
+        return shelvemod.dounshelve(ui, repo, *shelved, **opts)
 
 @command('update|up|checkout|co',
     [('C', 'clean', None, _('discard uncommitted changes (no backup)')),

mercurial/shelve.py

@@ -845,7 +845,7 def _checkunshelveuntrackedproblems(ui,
         hint = _("run hg status to see which files are missing")
         raise error.Abort(m, hint=hint)
 
-def _dounshelve(ui, repo, *shelved, **opts):
+def dounshelve(ui, repo, *shelved, **opts):
     opts = pycompat.byteskwargs(opts)
     abortf = opts.get('abort')
     continuef = opts.get('continue')