backed out all changes related to BreakpointsMediator and moved the new mediator into EDC to be an EDC-specific service. Two problems solved here:
1. It will take some time for Pawel (and other DSF/GDB committers) to review and accept the big change to the mediator, namely the new mediator won't get into CDT repository for who knows how long. That would make EDC debugger in CDT repository a handicapped debugger (breakpoints not shown as resolved, disabled breakpoint still stops program, breakpoints in inline-function do not work well, etc).
2. All mediator related change is kept in our local CDT repository, which makes Ken's life harder when he tries to sync it with upstream.