[jdt-debug-dev] Promote BreakpointUtils to API

[Jared Burns <jared-eclipse@xxxxxxxxx>]

org.eclipse.jdt.internal.debug.ui.BreakpointUtils should be moved to the jdt 
debug core, renamed to JavaBreakpointUtils, and promoted to API 
(org.eclipse.jdt.debug.JavaBreakpointUtils).

The methods on this "class" were once part of the API in the IJavaBreakpoint 
hierarchy. When they were pulled out of the hierarchy (to seperate the 
breakpoint hierarchy from the java model), they were also moved to the UI 
component. However, these methods are still useful in the core. As such, this 
functionality should be returned to the core and promoted to API so that the 
UI can still access them.

- Jared