0xxx: Grabbed from upstream development.
1xxx: Possibly relevant for upstream adoption.
2xxx: Only relevant for official Debian release.

The point the the numbered patch naming scheme is for patches targeted
for upstream adoption to not be "infected" by already-upstream or
local-only changes.

In this case there was no "infections": no patches affect each
other.  So the ordering is just for the principle of it.

The series file should be recreatable with the following command from
within the patches dir (and manually commenting out any disabled
patches afterwards):

    ls -1 0* 1* 2* > series
