[galaxy-commits] commit/galaxy-central: greg: Add support for a new <action type="set_environmnet_for_install"> tag in tool_dependencies.xml files included in tool shed repositories. This tag currently can include any number of <repository> tags, each of which will contain any number of tool dependency tags (i.e., <package> or <set_environmnet> tags). The settings in the env.sh file for each of the tool dependency tags will be injected into the environment for all following shell commands defined in the too