ui: represent paths as classes Many have long wanted for paths to have expanded functionality and flexibility. In order to make that transition possible, we need to start representing paths as something more than simple strings. This patch introduces two classes: 1) "path" for representing a single path instance 2) "paths" for representing a collection of "paths" Since we don't like patches that introduce new code without any consumers, we convert ui.expandpath() to use the new APIs internally. Upcoming patches will start exposing "path" instances to consumers that currently interface with string paths. The new "paths" attribute of ui is populated from config data the first time it is accessed. Since it isn't updated when the configs are modified, this could lead to some inaccurate caching behavior. It shouldn't be an issue, as paths information is typically not accessed until command dispatch, which occurs after the repository config and extensions have been loaded. Time will tell if we need to refresh paths information when the underlying config changes.

color: omit terminfo/win32 warning if non-interactive (issue4543) It's pretty annoying to be getting this warning when already the colour extension has no hope of working. If there isn't a human on the other end to to see the colours, there probably isn't a human either who cares about this warning. More likely, some script somewhere is gonna get confused with the warning output. Of course, if we still want to see the warning for some reason, we can always set --config ui.interactive=True.

incoming: hide help about use of --bundle option by default Pulling from incoming bundle can cause trouble such as missing phase movement, bookmarks and largefiles transfer. Average user won't need this option.

patch.applydiff: accept a prefix parameter This is preparation for upcoming patches that will add support for applying a patch within a subdirectory.

patch._applydiff: accept a prefix parameter This is preparation for upcoming patches that will add support for applying a patch within a subdirectory. We normalize the prefix here because this is the main driver -- all code to apply patches is expected to go through here.

patch.makepatchmeta: accept a prefix parameter This is preparation for upcoming patches that will add support for applying a patch within a subdirectory.