Install abbot.* eclipse plugins

From AbbotWiki

NOTE: this documentation references CVS rather than SVN. The CVS server is no longer accessible, but all content has been moved to SVN.

Use the "Building abbot.swt" doc page (http://abbot.svn.sourceforge.net/viewvc/abbot/abbot.swt/trunk/abbot.swt/doc/swt/building.html?revision=HEAD)