Release automation fails on Windows

[Ross]

Environment

Windows 10
Python 2.7

How to reproduce

1. Setup repositories as described in #5994.
2. Attempt to run release automation as described in #5994.

Observed behaviour

The release automation fails on Windows with the error:

Traceback (most recent call last):
  File "D:\dev\scratch5994\adblockpluschrome\build.py", line 17, in <module>
        import buildtools.build
  File "D:\dev\scratch5994\adblockpluschrome\buildtools\build.py", line 139, in <module>
    make_argument('output_file', nargs='?')
  File "D:\dev\scratch5994\adblockpluschrome\buildtools\build.py", line 42, in wrapper
    short_desc, long_desc = func.__doc__.split(os.linesep + os.linesep, 1)
ValueError: need more than 1 value to unpack

Expected behaviour

Release automation to successfully run on Windows too. We should probably split using regex as described by Wladimir here.

[sebastian]

I didn't confirm if the above error can still be reproduced, but at the moment the biggest blocker preventing Adblock Plus form even building on native Windows is #6587. Also the Python-based release automation is to be discontinued, see #7120, and we avoid touching the code for the time being.