The shapelib distribution has an LGPL COPYING file (see
https://github.com/OSGeo/shapelib) but checking the sources the default license
is actually an MIT style license with the option to use the LGPL if a project
so chooses.  Since the MIT style is simpler for BRL-CAD to use it is the one we
opt for, and the default license terms are reproduced below:

NOTE: the presence of the LICENSE.LGPL file in our source tree is for reference
does not indicate that BRL-CAD has opted for LGPL rather than MIT licensing for
our use of shapelib.

Copyright (c) 1999, Frank Warmerdam

This software is available under the following "MIT Style" license, or at the
option of the licensee under the LGPL (see LICENSE.LGPL). This option is
discussed in more detail in shapelib.html.

Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
of the Software, and to permit persons to whom the Software is furnished to do
so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

file:/src/conv/shp/shapelib/safileio.c
file:/src/conv/shp/shapelib/shapefil.h
file:/src/conv/shp/shapelib/shpopen.c

