prune: with active bookmark should stay active hg prune with an active bookmark was deactivating the bookmark after the prune. This patch makes sure that if a bookmark was active before a "prune" operation (except prune -B) then the bookmark stays activate afterwards.

syntax: re
/figures/[^/]+\.png$
^docs/build/
^docs/html/
^html/
\.pyc$
~$
\.swp$
\.orig$
\.rej$
\.err$
^tests/easy_run.sh$
^build/
^MANIFEST$
^docs/tutorials/.*\.rst$
\.ico$