do not flush non-errors to stdout because this is a concurrency issue.
the flush-call appeared very often in thread dumps with high load, so
this hopefully gives some performances
reacivated clear stacks code for termination of all crawls because this
did not work wihtout that part of the code
remove obsolete config footer option (ConfigPortal user.login)
no footer or footer-option in use

remove unused yacy.init item allowUnlimitedReceiveIndexFrom
Merge branch 'master' of git@gitorious.org:yacy/rc1.git