m + comments

Signed-off-by: Mattias Andrée <maandree@operamail.com>
m + some unordered subseq simplification

Signed-off-by: Mattias Andrée <maandree@operamail.com>
mds-kbdc: eliminate unorded subseq:s inside alternations

Signed-off-by: Mattias Andrée <maandree@operamail.com>
m

Signed-off-by: Mattias Andrée <maandree@operamail.com>