Is it possible to connect mylyn to redmine without rest support in redmine?
there is a link http://download.eclipse.org/mylyn/incubator/3.8 that can be used in Eclipse. for Eclipse indigo :
after installing it, i was able to follow steps outlined in http://www.redmine.org/projects/redmine/wiki/HowTo_Mylyn ( the section 'Using the generic web repository connector' ).
there is also a half decent video on Youtube :)