This is a Subversion feature. You need to configure auto-props. If you are using SVN 1.7 or older read this:
http://svnbook.red-bean.com/en/1.7/svn.advanced.props.html#svn.advanced.props.auto
IF you are using SVN 1.8 (Subclipse 1.10) there is a new/easier way to do it. See here:
http://blogs.collab.net/subversion/the-road-to-repository-dictated-configuration-day-2-autoprops
Once this is configured, these properties will be added automatically as files are "added" to Subversion.