[eclipse-pmc] new API required to fix Bug 177927

[Felipe Heidrich <Felipe_Heidrich@xxxxxxxxxx>]

I'll need new API to fix Bug 177927.
For the fix I need to change StyledText to use the new API 
Control#dragDetect.
I also need to extent this API in control to take the click count.

Remove from Control 
public boolean dragDetect (int button, int stateMask, int x, int y)
Note: Control.dragDetect(int, int, int, int) was new API for Eclipse 3.3 

Add to Control
public boolean dragDetect (Event event) 
public boolean dragDetect (MouseEvent event) 

Thanks
Felipe