Update to upstream version '1.6.3'
with Debian dir c7a58190b5bc2993dfd57f10834c15ba278370b6

Closes: #1086983

This change notably attempts to make the code block more readable,
cleans up the removal list, skips the new test file needing Internet
project_manager_test.py, and create .central.cfg and .devxnat.cfg as
they are expected by certain tests attempting connection to a local
server.

Patch deleted: it is applied upstream.

Update to upstream version '1.6.2'
with Debian dir 6bff1778045feb7a0015dd661e0aff229db332a8

Note the addition of the manual page also required declaration in
d/manpages and adjustments to dh_installman options because of the
file extension of the script.

Update to upstream version '1.6'
with Debian dir 60ac08fd240810b06d3b698a40ad7e501728b263