vfsward: register 'write with no lock' warnings as 'check-locks' config

Update 'write with no lock' warnings in order to be better controlled by the
config.  We reuse the option used for lock order for these other lock related
message.

The message can now be disabled using 'devel.check-locks = no' (in addition to
the usual 'devel.all-warnings = no').

mercurial/localrepo.py

@@ -489,7 +489,7 b' class localrepository(object):'
                 # journal is covered by 'lock'
                 if repo._currentlock(repo._lockref) is None:
                     repo.ui.develwarn('write with no lock: "%s"' % path,
-                                      stacklevel=2)
+                                      stacklevel=2, config='check-locks')
             elif repo._currentlock(repo._wlockref) is None:
                 # rest of vfs files are covered by 'wlock'
                 #
@@ -498,7 +498,7 b' class localrepository(object):'
                     if path.startswith(prefix):
                         return
                 repo.ui.develwarn('write with no wlock: "%s"' % path,
-                                  stacklevel=2)
+                                  stacklevel=2, config='check-locks')
             return ret
         return checkvfs