git-svn: hide find_parent_branch output in double quiet mode
git-svn: hide find_parent_branch output in double quiet mode

Hide find_parent_branch logging when -qq is specified.
This eliminates more unnecessary output when run from cron, e.g.:

Found possible branch point:
http://undernet-ircu.svn.sourceforge.net/svnroot/undernet-ircu/ircu2/trunk =>
http://undernet-ircu.svn.sourceforge.net/svnroot/undernet-ircu/ircu2/branches/authz,
1919
Found branch parent: (authz) ea061d76aea985dc0208d36fa5e0b2249b698557
Following parent with do_switch
Successfully followed parent

Acked-by: Eric Wong <8c2951295f8292b0c03727bc4652981172298eae@yhbt.net>
Signed-off-by: Simon Arlott <088e16a1019277b15d58faf0541e11910eb756f6@fire.lp0.eu>
Signed-off-by: Junio C Hamano <a6723cc3f76163bf7adb636a73ac3b0ceb3e6b9b@pobox.com>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git