transaction: allow finalizer to add finalizer It will make some code (persistent nodemap related) simpler to write, because higher level code can blindly queue finalization without thinking too hard about the context. Differential Revision: https://phab.mercurial-scm.org/D7833

tests: stabilize test-subrepo-svn.t on Windows This partially reverts 991e4404e910, because the URL form of `C:\...` gets escaped to `C%3A/...`, which breaks the substitution of $TESTTMP. The forget command on 'notafile*' errored out with: notafile*: The filename, directory name, or volume label syntax is incorrect which I think is because '*' isn't a legal character in a file name (though I can't trigger this directly from MSYS or cmd.exe for some reason). Differential Revision: https://phab.mercurial-scm.org/D7816

rebase: fix bug where `--collapse` would apply diff on missing file Even though the file was missing, the rebase would succeed. Differential Revision: https://phab.mercurial-scm.org/D7897