VNL 2020-02-14 (be6c1433)

Run the UpdateFromUpstream.sh script to extract upstream VNL
using the following shell commands.

$ git archive --prefix=upstream-vnl/ be6c1433 -- 
      CMakeLists.txt
      config/cmake
      core/CMakeLists.txt
      core/testlib
      core/vnl
      core/vxl_config.h.in
      core/vxl_copyright.h
      core/vxl_version.h
      v3p/CMakeLists.txt
      v3p/netlib
      vcl
 | tar x
$ git shortlog --perl-regexp --author='^((?!Kitware Robot).*)$' --no-merges --abbrev=8 --format='%h %s' 8af77376..be6c1433

Andy Neff (3):
      394b0498 Squashed commit of the following:
      5eaac2bb Clang format
      a49189b5 Missing include

Ben Boeckel (1):
      0ee4a0ae COMP: vpgl_rational_camera: fix compilation with GCC 4.8

Hans Johnson (3):
      efa3bca6 COMP: Prefer const member functions
      81b59ae6 COMP: Remove compiler warning indentation
      be6c1433 COMP: Fix compiler warning

Joseph Mundy (15):
      1d9e4a2f provide step edge dsm image
      9f8fe769 Added progress display
      11924c6f made progress display a class
      757c71e5 clean up bpgl_lon_lat_camera interface
      b9d4b360 base geo bounds on dsm image bounds
      ce0dadce typename required
      c5f60447 compute lvsc at lower right corner of dsm
      7e692787 improve comments for bpgl_geotif_camera
      9bc8ebd9 fix geotif test
      c3ed531d add fiducial tableau, remove geo_cam tableau
      b356f9b1  fiducial editor implementation
      6e8b7692 add comments, fix test_include
      f4afde8e fixed line break problem and scale factor =1 for win
      c25330c5 missing include file for glut adaptor
      d731f42e remove extra vgui_utils include

Noah Johnson (4):
      f9508aad Fix the comment description of vpgl_rational_camera::set_offset
      90e259b6 Add a negative penalty for small focus vertex cliques
      170f443f whoops integer division is bad
      9f915dee Need to weight by size of connected component in relation to the total graph, not the connections from a focus vertex compared to the size of the component

Change-Id: I293d35494bfb9ce5e8d631eceaf8b82daadd952a