Martin von Zweigbergk <martinvonz@google.com> [Tue, 11 Nov 2014 10:16:54 -0800] rev 23257
context.status: explain "caching reasons" more fully
Where we "load earliest manifest first for caching reasons", elaborate
on what "caching reasons" refers to. Text provided by Matt in
http://thread.gmane.org/gmane.comp.version-control.mercurial.devel/73235/focus=73578.