Version information and more in the Windows resources for main
applications, installer and un-installer.
Update CMake policies for new project() command, and DEB
dependency changes
Support older libgfortran packages, and other Linux package
dependencies.
Use new project description file in Debian packaging.
Linux packaging dependency adjustments for Debian style packages,
including a machine readable Debian copyright format, project
description in separate file for CPack compatibility, and use for
DEB packaging.
Configure check for need to link libm Standard C Math Library.
CMake compatibility for <3.17.
Bill Somerville