Many Chromium projects have moved from 'master' to 'main', where
'master' is no longer updated. Point at HEAD instead, which should
always represent the default branch.
I don't actually rerun/regenerate the database, since I don't really run
systemd environments to test that update on.
The PE header size calculation failed to take the PE magic and coff
header size into account, which will lead to header truncation if we are
writing only 5 sections.
CentOS 8 ships python 3.6 so let's try and stay compatible with that
since the only feature we're using that requires python 3.9 is the
streamlined type annotations which are trivial to convert back to
the older stuff to stay compatible with python 3.6.
The entries are sorted by speed. Some fields are left empty when there is no
clear value to use. The table is much longer now, but I think it's better to
document the allowed values, even if some are not terribly useful.
Fixes#26256.
