RTF import: fix handling of multiple \lfolevel control words

Change-Id: I242853d491c2ef83f192486fa6fe5a3407700047
(cherry picked from commit 74249cb6f4f52b7c10ebaa92f943920f6f94aaf4)
fdo#82006 RTF filter: import \sbauto and \saauto

Change-Id: Iabff543c8191fc86dceb9274ea1552f60d73dabd
(cherry picked from commit bb77fd64f9219f1b8f990f5041d81cfddd021213)