HEADS UP: /usr/bin/python is Python 3 in rawhide

[Miro Hrončok]

Just a reminder that builds are currently running for python2 and python3 that 
change the meaning of /usr/bin/python from Python 2 to Python 3 in rawhide.

For details, see https://fedoraproject.org/wiki/Changes/Python_means_Python3

I'll be sending e-mails later to package owners who still depend on 
/usr/bin/python or who have other tools in /usr/bin/ that should be switched over.

In case of trouble, block the tracker bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1729593

Thanks,