templater: inline global 'path' list in templatepaths

templater: introduce templatepaths for getting paths searched for templates Avoid function with different return types depending on parameters.

util: introduce datapath for getting the location of supporting data files templates, help and locale data is normally stored as sub folders in the directory containing the source of the mercurial module. In a frozen build they live as sub folders next to 'hg.exe' and 'library.zip'. These different kind of data were handled in different ways. Unify that by introducing util.datapath. The value is computed from the environment and is always used, so we just calculate the value on module load.

util: move _hgexecutable a few lines, closer to where it is used

hgk: define bookmark colour explicitly, as Tk 8.6 has changed their meaning

largefiles: remove 'forget' list that's always empty

bookmarks: fix divergent bookmark path normalization

exchange: remove a broken i18n abuse

bookmark: make the search for divergent names more robust We translate the "url we update from" and "the url in the config" into their canonical representation. This is useful for urls that have multiple equivalent forms: /foo/bar/ == file:/foo/bar/ == file:///foo/bar eg: hg pull --config path.bar=/foo/bar/ file:/foo/bar

pull: gather all bookmark-pulling code together Pulling bookmarks is done in two rounds. First we do a simple update, then we use the content of the `bookmark` argument to possibly overwrite some bookmark with their remote location. The second step was not done right after the first one for some obscure reason. We now perform them one after the other.