resolve: slightly simplify join expression by joining with empty strings Differential Revision: https://phab.mercurial-scm.org/D5938

resolve: respect ui.relative-paths also for warning messages I guess this should have been part of 72a9aacff645 (resolve: respect ui.relative-paths, 2019-01-29). Differential Revision: https://phab.mercurial-scm.org/D5937

addremove: respect ui.relative-paths I previously changed these code paths while trying to not change any behavior to avoid inconsistencies between them in the intermediate commits. They're now all ready to be switched over to respecting ui.relative-paths. Differential Revision: https://phab.mercurial-scm.org/D5936

windows: use util.localpath for repo-relative paths in getuipathfn() Now that we have a single place that translates from internal path representation (slash-separated) to UI representation (i.e. scmutil.getuipathfn()), let's switch that over to using util.localpath for absolute paths. I don't expect any test impact on Windows because we still respect ui.slash, which is set by the test runner. As Yuya pointed out, a997163e7fae (status: extract helper for producing relative or absolute path for UI, 2019-01-29) accidentally changed to slash-separated paths on Windows because it used used to use repo.pathto(f, cwd='') (which calls util.localpath()) and after that patch it just prints the filename without any transformation. This patch should fix that regression. Differential Revision: https://phab.mercurial-scm.org/D5935