Mirror release artifacts from upstream repository

[emxsys]

The release artifacts from the upstream repo releases should be mirrored in this repository to safeguard them from any potential NASA suspension activities.

[emxsys]

For posterity, mirrored all the previous NASA WWJ releases with artifacts and release notes in WWJ-CE releases

• Also added the code to build the embedded GDAL library to the v2.0.0 assets
• Noted that the v1.5.1 codebase contains the last copy of the WorldWind Java WMS Server