Tvheadend

The file support/doc/md_to_c.py has shebang "#!/usr/bin/env python". On Arch Linux and some other distributions, this points to python 3. This causes a build failure:

Markdown: docs/markdown/before_begin.md
Markdown: docs/markdown/install_tvheadend.md
Markdown: docs/markdown/install_hardware.md
Markdown: docs/markdown/configure_tvheadend.md
Markdown: docs/markdown/epg.md
Traceback (most recent call last):
  File "support/doc/md_to_c.py", line 403, in <module>
    text = fp.read(1024*1024*2)
  File "/usr/lib/python3.5/encodings/ascii.py", line 26, in decode
    return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 961: ordinal not in range(128)
Makefile:671: recipe for target '/build/tvheadend-git/src/tvheadend-git/build.linux/docs-timestamp' failed

Changing the shebang to "#!/usr/bin/env python2" causes the file to run with python 2 and fixes the build. I believe this should work for any distribution that now defaults to python 3 and still has 2 installed.