Split index-all into index-init and index-update. index-init is run to re-initalize after a configuration change while index-update will just update the index for all items. This simplifies upgrading an existing DSpace by having one easy indexing command to run after the upgrade.
git-svn-id: http://scm.dspace.org/svn/repo/branches/dspace-1_5_x@2614 9c30dcfa-912a-0410-8fc2-9e0234be79fd
