rst2man: automatically write sections in uppercase
Man pages have uppercased section titles but other formats do not.
Letting rst2man handle the tranformation allows better reuse of text
between man pages and other formats.
Use utf-8 encoding in test-branchmap's clone call
After
75520c24feda it is printed in local encoding, i.e. "C" if not set
otherwise.
Branch name printed since
a3d73b3e1f8a now in local encoding.