filemerge: switch the default name for internal tools from internal:x to :x

filemerge: introduce :x as short version of internal:x merge tool name "internal:" is so much typing - it is frequently specified on the command line and gives options that are longer than any other I have seen.

branches: include active, closed and current flags in template output

branches: merge white space to format string Diffs of test output should be harmless. A white space character is moved into "log.changeset" color region.

branches: port to generic templater

branches: format rev as integer that is necessary for generic templater

formatter: add general way to switch hex/short functions This seems a bit awkward, but it can avoid duplicates in annotate, tags, branches and bookmarks. I guess fm.hexfunc can eventually be removed (or redesigned) when it gets template backend.

locarepo: remove the `pull` method (API) All the logic of this function is in the `exchange.pull` function for some time. We just stop calling `localrepo.pull` in `command.pull` to have access to more information. Leaving `localrepo.pull` in place will let third-party extensions wrap it but it would never be called by `hg pull` making the wrapping useless. Therefore, the method is removed so that third-party code fail noisily and get properly upgraded.

transplant: use exchange.pull localrepo.pull is going away. See 4d52e6eb98ea for details.

convert-hg: use localrepo.pull localrepo.pull is going away. See 4d52e6eb98ea for details.

fetch: use exchange.pull localrepo.pull is going away. See 4d52e6eb98ea for details.

localrepo: use exchange.pull when cloning localrepo.pull is going away. See 4d52e6eb98ea for details.