git.c: update NO_PARSEOPT markings

git.c: update NO_PARSEOPT markings

Our Bash completion script can complete --options for commands using
parse-options even when that command doesn't have a dedicated
completion function, but to do so the completion script must know
which commands use parse-options and which don't.  Therefore, commands
not using parse-options are marked in 'git.c's command list with the
NO_PARSEOPT flag.

Update this list, and remove this flag from the commands that by now
use parse-options.

After this change we can TAB complete --options of the plumbing
commands 'commit-tree', 'mailinfo' and 'mktag'.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>