streamclone: abort when client needs to handle obsmarkers, but doesn't When client doesn't have any of obsolescence markers exchange capabilities, then it's safe to say it can't handle obsmarkers. However, if it understands even one format version, then stream clones are fine -- client can use "obsmarkers" bundle2 part.

streamclone: include obsstore file into stream bundle if client can read it

setup: build exewrapper with Unicode support on py3 I didn't see a compiler switch documented anywhere, but I diffed the command line for full VC++ project when toggling between MBCS and Unicode. This is all they do.

exewrapper: convert to _tcsxxx functions for Unicode compatability This fixes more than 50 tests on py3 on Windows when enabled, mostly hooks and such that invoked `hg` directly. 187 left to go. I skipped doing the abort printing with Unicode because of apparent issues with MinGW [1]. It may be moot though, as MinGW isn't listed as a supported compiler after 3.4 [2]. [1] https://stackoverflow.com/questions/17700797/printf-wprintf-s-s-ls-char-and-wchar-errors-not-announced-by-a-compil [2] https://wiki.python.org/moin/WindowsCompilers

exewrapper: drop an unused variable

commands: restore compatibility for "^cmd" registration (issue6005) This is done at loading time, where ui is available.