NAME
    DisposeRegion -- Return all space for this region to free
                     memory pool.
SYNOPSIS
    DisposeRegion(region)
                  a0
    void DisposeRegion( struct region * );
FUNCTION
    Free all RegionRectangles for this region then
    free the region itself.
INPUTS
    region - pointer to region structure
BUGS
SEE ALSO
    newregion() graphics/regions.h