Summary:
This hardcodes several perftweaks configs that have been enabled for major FB
repos for months:
[perftweaks]
disablebranchcache = True
disablebranchcache2 = True
disableresolvingbranches = True
disableupdatebranchcacheoncommit = True
Practically, this means the branchmap is now just `{'default': heads}`. (i.e.
there are no named branches other than `default`), and branchcache is removed
(i.e. `.hg/cache` does not exist without clindex or in-repo tags).
This diff only makes easy-to-verify logic changes by assuming the configs and
removing dead code. Things can be further cleaned up. They will be done by
upcoming changes.
Most test changes are due to the fact that `.hg/cache` is no longer created.
Reviewed By: singhsrb
Differential Revision: D14179858
fbshipit-source-id: 479f7427168eb1d9614a973e273a229e50f5620a
Summary: Remove "hg branch" invocation to make the test future-proof.
Differential Revision: D13934440
fbshipit-source-id: cb410abc86d6e23c952ba5562b7918e2dc281ac3
Summary: Signifying the change of perftweaks from an extension to a config grouping.
Reviewed By: quark-zju
Differential Revision: D10416857
fbshipit-source-id: b233a353c7da1d211ad0a7e53b942244863a83b3
