Use OPENSHIFT_DEPENDENCIES_DIR in jenkins_shell_command for php

Fixes for nodejs
Fixes for python versions

Conflicts:
	cartridges/openshift-origin-cartridge-python/usr/versions/shared/bin/install

Create build dependencies dir
Jbossas changes for build dependencies
jenkins_shell_command template + delete cartridge scripts
Use build-dependencies dir for jboss carts
Merge pull request #4 from pmorie/build-deploy

Change various cartridges to use dependencies dir, introduce build-dependencies