First pass of the cleanup of Ant's targets defined in main build file and in build files for framework/applications/specialpurpose folders:
* removed redundant targets (e.g. clean-xtras)
* removed unused targets and settings
* moved runtime related targets from framework to main build file
* moved the search index runtime folder from runtime/data/indexes to runtime/indexes to prevent the removal of indexes when clean-data is executed



git-svn-id: https://svn.apache.org/repos/asf/ofbiz/trunk@1520510 13f79535-47bb-0310-9956-ffa450edef68