hghave: fix 'rmcwd' to ensure temporary directory is removed On platforms where cwd can't be removed, it should try rmdir() after chdir to the original cwd.

httppeer: make __del__ access to self.urlopener more safe Some errors could in some cases show unfortunate scary and confusing warnings from the httppeer delstructors: abort: nodename nor servname provided, or not known Exception AttributeError: "'httpspeer' object has no attribute 'urlopener'" in <bound method httpspeer.__del__ of <mercurial.httppeer.httpspeer object at 0x106e1f5d0>> ignored``` To mute that, take 7b15dd9125b3 to the next level and use getattr in __del__.

tests: test preserving execbit changes at amending only on execbit platform

tests: put temporary file outside the working directory for test portability test-largefiles-update.t creates temporary file exec-bit.patch inside the working directory for no-execbit platform specific test, but subsequent tests aren't aware of it. On execbit platform, subsequent tests can run successfully, because exec-bit.patch isn't created. But on no-execbit platform, this temporary file makes subsequent tests show "? exec-bit.patch" at each "hg status".

tests: avoid quoting of commit messages for test portability journal extension uses util.shellquote() to record command line, but result of it depends on runtime platform: double quotation is used on Windows and OpenVMS, but single quotation is used otherwise. test-journal-share.t sometimes specifies commit messages including white space on command line. It makes journal output depend on runtime platform, but commit message itself isn't important in this test case.

tests: use basic format code "%Y" instead of "%s" for test portability On Windows, strftime() doesn't support format code "%s", and it causes "invalid format string" error. https://msdn.microsoft.com/en-us/library/fe06s4ak.aspx test-command-template.t examines not seconds value in UTC, but arithmetic calculation. Therefore, using format code "%Y" instead of "%s" should be reasonable. FYI: - Python standard library reference doesn't list "%s" up in format code list required for "C standard (1989 version)", even though it also mentions that additional format codes are required for "C standard (1999 version)" https://docs.python.org/2.7/library/datetime.html#strftime-and-strptime-behavior - The Open Group Base Specifications Issue 7 (IEEE Std 1003.1-2008, 2016 Edition) doesn't require strftime to support format code "%s" http://pubs.opengroup.org/onlinepubs/9699919799/functions/strftime.html - "man strftime" of (Open/Oracle) Solaris and Mac OS X (= UNIX certified OSs) describes about format code "%s"