phases: make order of debug output 'removing unknown node' deterministic

comments: fix minor spelling issues found with spell checker

hooks: for python hooks, consistently use __name__ etc as name, not the repr There is no reason to expose unnecessary Python implementation details and memory locations, also not in debug mode. readablefunc was already creating a nice name - we move that functionality up and reuse it. We consider having a __call__ and being types.FunctionType sufficiently similar and unify these two to just using the existing check for __call__.

hooks: move logging of hook name to after we have found the hook We do not expect the finding process to take a significant amount of time - it is the execution time of the hook we care about.

rebase: show nice list instead of set repr for 'computed skipped revs' debug

rebase: fix 'rebase onto %d starting from %s' - show root instead of list repr The debug statement is already in a 'for root in roots' so it was probably the intention to show root instead of roots. Do that.

log: describe graph symbols in the help I wondered what 'x' meant and didn't find it described anywhere.

tests: backout a82de9dc4f77, debugstacktrace is now stable, drop workaround

util: debugstacktrace, flush before and after writing Close another stream (default stdout, which often is buffered) before writing to the primary stream (default stderr, which often is unbuffered). The primary stream is also flushed after writing (in case it is buffered). This fixes non-deterministic output order, especially on windows.

run-tests.py: work when --with-hg is set to system hg Previously we'd always assume that --with-hg is a script in a user directory, and would write out a 'python' symlink to the same location. That didn't work if --with-hg was set to a system installation of hg, e.g. /usr/bin/hg. Introduce a TMPBINDIR directory which is used to write out the python symlink.