Be able to add third party dependencies not available from conventional repositories.
Primarily intended for including Hypersistence Optimizer dependency in a clean way, avoiding warnings during a Maven build that arise from using <scope>system</scope>
in the dependency section.
Note: The Hypersistence Optimizer maven-install.sh
script does the same as what's described here, just omits creating a subdirectory in the project base directory. Here the suggested subdirectory is 3rdpartylibs
.