Merge with stable

test-http-branchmap: enable on Windows Tests using "hg serve --daemon" are currently disabled on Windows for lack of proper kill utility. The one shipped with MinGW operates on internal process identifiers and not on the ones recorded by hg serve. Fortunately we can replace most of them by calls to killdaemons.py. This patch is a proof of concept on how to run these tests on Windows. The plan is: - Check test-http-branchmap.t does not fail/hang on the buildbot - Convert all kill utility calls to killdaemons.py calls. - Add a rule in check-code.py to forbid kill calls, or ignore the remaining ones (test-hup.t, etc.). - Possibly drop the 'serve' rule from hghave. The: listening at http://*:$HGPORT1/ line does not appear on Windows because the detached process can no longer write on its parent streams. Grepping hg serve stdout directly causes the parent process to never return and hangs the test. This is a bug, but I have no simple solution and prefer to pay this small price and enable hg serve tests on Windows. [ orginal upstream message ]

Merge with stable

tests: unset variable HG if it is set When hg tries to call itself it can call a different hg executable when this variable is set. Some tests fail when the called hg version is different. [ original upstream message ]

Merge with stable

spelling: destination [ original upstream message ]

killdaemons: take file argument explicitely It makes it easier to use as a generic replacement for kill utility, mostly for Windows tests. [ original upstream message ]