A few changes to the SCons builds.
Install Gradle Wrapper 1.3.
Get the run targets working.
Two spaces per indent.
Add Java build to the all.sh script.
Two spaces per indent.
Two spaces per indent.
Ensure compile is the default target for all projects.
Two spaces per indent.
Two spaces per indent.
Relocate the Java code used for the Groovy/Java versions.
Various updates to the Groovy/Java versions.