Partial revert of 0a97e68c48 (Special handling of signals for cf-key)

In that commit, the signal handler for SIGPIPE was removed. SIGPIPE
can easily happen when you pipe your input into for example grep, so
we need to restore this. We ignore the signals so any output after the
signal will just go to the void.
(cherry picked from commit f4f36f2010679e9a112ca52b4a571c8a763af2f9)
examples/container_key_iteration.cf: add a container key iteration example

(cherry picked from commit c7fa1ae141d32a4827d0830812dba49c03dd03e1)
added debian directory to build deb packages
new daily release 5 June 2014 and start all daemons
adde ~ back in version numbering
fixed an error in debian postinst script
new debian version
Merge branch '3.6.x' of github.com:basvandervlies/core into 3.6.x