workingctx: add _prestatus method to call _dirstatestatus With this patch, we are one step closer to removing 'if ... else' logic in localrepo.status for testing if the context is the working directory or not. Future patches will replace those blocks of code with a call to the context's _prestatus hook so that each context object will do the right thing depending on the situation.

context: add a no-op _prestatus method This patch adds a private _prestatus method so that certain contexts, such as workingctx, can add custom pre-processing to status.

localrepo: use _buildstatus from context

context: add _buildstatus method This method is a copy of localstatus.status's core logic. Later patches will clean up some of the dense coditionals in the for loop.

localrepo: remove workingctx logic already moved to context

localrepo: move the order of local variables This movement is a small step in getting rid of the 'if ... else' logic for testing the current working directory with its parent. Previously, the deleted, unknown, and ignored variables were set in a combination of before an 'if ... else' block and within the block. This moves the variables to be set outside the loop in one common place.

localrepo: factor out _manifestmatch logic for workingctx

localrepo: use _manifestmatches instead of duplicating logic