[PATCH 1 of 2 v3] context: add obsolete() method to basefilectx

[Yuya Nishihara]

On Sat, 18 Nov 2017 15:34:24 +0800, Anton Shestakov wrote:
> # HG changeset patch
> # User Anton Shestakov <av6 at dwimlabs.net>
> # Date 1510977537 -28800
> #      Sat Nov 18 11:58:57 2017 +0800
> # Node ID 880072944df7bb19b949d9a025a80e7def1a8525
> # Parent  b437b4c6a7bec3aad936fcd56d6feda8d3b089d0
> # EXP-Topic hgweb-more-info
> context: add obsolete() method to basefilectx

Looks good. Queued, thanks.