tests: remove temp doctest file when finished running it [ original upstream message ]

tests: add helper script for processing doctests read from stdin Writes stdin to a temp file and doctests it. In the future we might want to spare the temp file and directly call into doctest. Also, with some tweaking it seems possible to adjust the line numbers reported in an error report so they match the ones in the original file. [ original upstream message ]

tests: prepare get-with-headers.py for MSYS get-with-headers.py took the http GET parameter as a command line parameter that had to start with '/'. MSYS on windows will mangle such paths. Instead of applying a workaround everywhere (such as an extra '/') we let get-with-headers.py add the mandatory '/'. That is consistent with the url path handling in the Mercurial url class. A few tests sent 'GET ?cmd=...' which is invalid. They will now send 'GET /?cmd=...'. This will not enable any tests for being run on windows - only remove one reason they were disabled. [ original upstream message ]

tests: hghave outer-repo should be true even if a bad repo is found Only the abort message 'no repository found' is a reliable indication that there is no outer repo. [ original upstream message ]

tests: add missing no-outer-repo requirements Outer repos (if any) will now never be touched by the tests. But it is better to run without any repos around the tmp directory. [ original upstream message ]

Merge with stable

tests: introduce hghave hardlinks Some tests can't be run on FAT filesystems because it doesn't support hardlinks. [ original upstream message ]

tests/hghave: test that the inotify unix socket actually can be created Inotify do not work on FAT filesystems. [ original upstream message ]

tests/hghave: test that a fifo actually can be created on the filesystem Some tests were failing on FAT filesystems. [ original upstream message ]

tests/hghave: consistently use dir='.', prefix=tempprefix for tempfiles Some feature tests were done in the wrong directory and could thus give the wrong result. [ original upstream message ]