build.xml fails due to a too long classpath error

[jeffmorin]

Describe the bug
After building the project using Maven, I build the runtime application tree using the fresh_install target in /dspace/target/dspace-installer/build.xml. The test_database target, which is a transitive dependency of fresh_install, fails due to a too long classpath error.
I don't know whether the bug occurs on all platforms, but it occurs minimally in Windows environments (like mine).

To Reproduce

1. Build the project with Maven (e.g., mvn clean package).
2. Run the fresh_install target in the build.xml Ant script copied into the /dspace/target/dspace-installer folder during the Maven building process.
3. If you can't reproduce the bug even in Windows, try working from a nested root folder on your file system (e.g., c:\dev\projects\workspace-dspace\DSpace).

Expected behaviour
The runtime directory tree should be built or refreshed with no errors.

Related work
I created a pull request for a fix: #9539.