minor psad.conf comment update
Bug fix to not create zombie whois processes

Bug fix to not create zombie whois processes when whois lookups take too
long to complete for whatever reason (slow network, etc.). This fixes
issue #15 on Github. The bug was reported by "3Turtles" to the psad
mailing list, and Dan Dickey provided valuable input.
Merge branch 'master' of ssh://10.211.55.11/home/mbr/git/psad
Added the abiliy to exec a script upon a blocking rule being added.

(Steve Murphy) Added the ability to run an external script whenever an
IP is blocked. Two new config variables were added to support this
feature, ENABLE_EXT_BLOCK_SCRIPT_EXEC and ENABLE_EXT_BLOCK_SCRIPT_EXEC.
bumped version to 2.2.4-pre1
Merge branch 'master' of ssh://10.211.55.11/home/mbr/git/psad