Issue with tmp folder

I ran into an issue with the line in https://github.com/AOEpeople/magento-deployscripts/blob/master/build.sh#L74

The problem is caused by missing tmp folder in the folder script is running from. I understand the build was designed to run on a CI server. But if someone runs the build from a location where tmp folder doesn't exists it will fail.

My suggestion is to create the tmp folder if it doesn't exists and delete afterward.

Start with build.sh at line 74 and run the build from a location without a tmp folder. Confirm the current failure, then verify that the build creates the needed temporary folder, completes successfully, and removes it afterward.

Written by the indexing model from the issue text.