mq: fix qnew and qimport to deal with series file comments
qnew and qimport did not take comments into account when deciding where
to place new patches in the series file.
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)