shelve: handle shelved node on unfiltered repository

To build a version of shelve that use hiding instead of stripping, we need
shelve to be able to find these revisions. This it does not hurt the bundle
version, so we introduce the necessary code in the relevant place.

hgext/shelve.py

@@ -160,10 +160,11 b' class shelvedfile(object):'
             btype = 'HG20'
             compression = 'BZ'
 
-        outgoing = discovery.outgoing(self.repo, missingroots=bases,
+        repo = self.repo.unfiltered()
+
+        outgoing = discovery.outgoing(repo, missingroots=bases,
                                       missingheads=[node])
-        cg = changegroup.makechangegroup(self.repo, outgoing, cgversion,
-                                         'shelve')
+        cg = changegroup.makechangegroup(repo, outgoing, cgversion, 'shelve')
 
         bundle2.writebundle(self.ui, cg, self.fname, btype, self.vfs,
                                 compression=compression)
@@ -762,6 +763,7 b' def _commitworkingcopychanges(ui, repo, '
 
 def _unshelverestorecommit(ui, repo, basename):
     """Recreate commit in the repository during the unshelve"""
+    repo = repo.unfiltered()
     with ui.configoverride({('ui', 'quiet'): True}):
         shelvedfile(repo, basename, 'hg').applybundle()
         shelvectx = repo['tip']
@@ -961,6 +963,7 b' def _dounshelve(ui, repo, *shelved, **op'
     if not shelvedfile(repo, basename, patchextension).exists():
         raise error.Abort(_("shelved change '%s' not found") % basename)
 
+    repo = repo.unfiltered()
     lock = tr = None
     try:
         lock = repo.lock()