Appveyor: always show the logs, and upload them as build artifacts

            Execute-Bash "VERBOSE=1 make -j2 check"

    }

on_failure:

on_finish:

- ps: >-

    if ($env:compiler -eq "mingw") {

            $oldpath = ${env:Path} -split ';'

            Execute-Bash "tail -1000 config.log || true"

            Execute-Bash "cat test-suite.log || true"

    }

on_failure:

- cmd: C:\Python27\python.exe %APPVEYOR_BUILD_FOLDER%\scripts\test\appveyor-irc-notify.py irc.oftc.net:6697 tor-ci failure

  o Minor features (continuous integration, Windows):

    - Always show the configure and test logs, and upload them as build

      artifacts, when building for Windows using Appveyor CI.

      Implements 28459.