Check for ack-grep before checking for ack
Check for ack-grep before checking for ack

To avoid confusion with the ubuntu ack package for Kanji code conversion: http://manpages.ubuntu.com/manpages/precise/man1/ack.1.html
termoshtt/zaw,willghatch/zaw,elek/zaw,g5pw/zaw,junkblocker/zaw,pengjiguang/zaw,vapniks/zaw,brandon-fryslie/zaw