largefiles: check if largefile could be found when archiving (issue3193)

largefiles: refactor lfutil.findfiles to be more logical

forget: fix subrepo recursion for explicit path handling When support for handling explicit paths in subrepos was added to the forget command (95174c381525), subrepo recursion wasn't taken into account. This change fixes that by pulling the majority of the logic of commands.forget into cmdutil.forget, which can then be called from both there and subrepo.forget.

add: fix subrepo recursion for explicit path handling When support for handling explicit paths in subrepos was added to the add command (9e99d2bbb1b1), subrepo recursion wasn't taken into account. This change adds an explicitonly argument to cmdutil.add to allow controlling which levels of recursion should include only explicit paths versus all matched paths.

tests: add subrepo recursion tests for add/forget with explicit paths When support for handling add/forget of explicit paths within subrepos was added (9e99d2bbb1b1/95174c381525), nested subrepos weren't handled properly. This change adds test coverage to expose the broken behavior, which will be fixed in later patches.

merge with stable

bookmarks: backout locking change in 12dea4d998ec Repo lock only applies to data in .hg/store/

changeset_printer: display changeset phase on debug level Backward compatibility make it hard to display it on higher level

phase: report phase movement When used in "set" mode, the phase command now display the number of changeset who changed phase.

largefiles: correctly handle newly added largefile on other side of merge