CopyEstimate: Container for results of fold change copy number estimation.
Description
  Contains the genomic coordinates of regions, and fold change estimates.
Constructor
    - 
    	
CopyEstimate(windows, unadj.CN, unadj.CN.seg)
	Creates a CopyEstimate object.
	
	    windows- A 
GRanges object.  unadj.CN- A matrix of fold changes.
  unadj.CN.seg- A 
GRangesList object holding
                                       the segmentation results.  
   
 Additional Slots
      These are added to by absoluteCN or relativeCN
    - type
 - A flag that contains if the copy number data is absolute or relative.