Outline Proposal: add getMaps() to abstract Proc.java

[Phil Muldoon <pmuldoon@redhat.com>]

This api will allow the direct access to map information via the 
abstract class Proc. This api will provide the maps for the Proc instead 
of the user constructing them manually via MapsBuilder for live 
processes, and CorefileByteBuffer for core file processes. Maps would 
not be stored in Proc as they are subject to change. This api would be 
demand based only (not via refresh).

Rough outline:

In Proc.java:

  /**
   * Return the Maps of the Proc.
   */
  public int getMaps ()
  {
    Map[] maps = sendrecMaps();
    return maps;
  }

  protected abstract Map[] sendrecMaps ();


in LinuxPtraceProc.java

protected Map[] sendrecMaps()
{
   // Implement frysk.sys.proc.MapsBuilder here
}

in LinuxCoreFileProc.java

protected Map[] sendrecMaps()
{
   return coreFileByteBuffer.getConstructedMaps()
}

in Maps.java

// Think of a different name for this class
public class Map
{
    public long addressLow;
    public long addressHigh;
    public boolean permRead;
    public boolean permWrite;
    public boolean permExecute;
    public boolean shared;
    public long offset;
    public int devMajor;
    public int devMinor;
    public int inode;    
    public int pathnameOffset;
    public int pathnameLength;

    public void Map(....)
    {
       // implement constructor setters here
        ............
        ............
    }
}