localrepo: resolve store and cachevfs in makelocalrepository() This is mostly a code move and refactor. One change is that we now explicitly look for requirements indicating a share is being used rather than blindly try to read from .hg/sharedpath. Requirements *should* be all that is necessary to dictate high-level behavior and I'm not sure why the previous code was doing what it was. The previous code has been in place since 87d1fd40f57e (authored in 2009). And the commit immediately after that (971e38a9344b) introduced ``hg.share()`` and always wrote the ``shared`` requirement. And as far as I can tell, every revision of ``hg.share()`` since has written either the ``shared`` or ``relshared`` requirement. So I'm pretty sure we don't need to maintain BC by always looking for and honoring the ``.hg/sharedpath`` file even if a requirement isn't present. .. bc:: A repository will no longer use shared storage if it has a ``.hg/sharedpath`` file but no entry in ``.hg/requires`` saying it is shared. This change should not have any end-user impact, as all shared repos should have a ``.hg/requires`` file indicating this. Differential Revision: https://phab.mercurial-scm.org/D4573