Merge branch 'rs/commit-list-append'

There is no need for "commit_list_reverse()" function that only invites
inefficient code.

By René Scharfe
* rs/commit-list-append:
commit: remove commit_list_reverse()
revision: append to list instead of insert and reverse
sequencer: export commit_list_append()

diff --cc revision.c
Simple merge

diff --cc sequencer.c
Simple merge