Martin von Zweigbergk <martinvonz@google.com> [Wed, 12 Nov 2014 16:51:11 -0800] rev 23302
context.status: make _dirstatestatus() return an status tuple
Letting _dirstatestatus() return an scmutil.status instance also means
that _buildstatus() will always return such an instance, so we can
remove the conversion from the call sites.