Merge pull request #310 from tzz/master

cloud_common: fix shim.pl on Mac OS X
Update collection in the course of delivering three professional trainings.  Aleksey Tsalolikhin, 22 May 2013.
Remove stray file
splunk: install splunk forwarder
Merge pull request #312 from tzz/feature/splunk

splunk: install splunk forwarder
Merge pull request #311 from atsaloli/master

examples: Update verticalsysadmin collection in the course of delivering three professional trainings.  Biggest change is add handles and comments to everything.
dclib: don't print metadata if it's not given
autobalance: new sketch to move load around the cloud
Merge pull request #313 from tzz/feature/cloud-autobalance

cloud autobalance sketch
autobalance: add test mode and respect it with better output.  Adjust test.pl.
cf-dc-api.pl: fix numeric validation to reject non-numerics; fix above/below message; fix all validation errors to be in the present tense