Use JDT static inner class clean up for
ua plug-ins

This ticket uses and tests the "Use static inner class" cleanup feature:
 - It reviews the feature
 - It reduces the memory consumption as it avoids the pointer to the
outer class

Example:

Before:

public class Outer {

public class InnerClass {
    int i;

    public boolean anotherMethod() {
        return true;
    }
}
}

After:

public class Outer {

public static class InnerClass {
    int i;

    public boolean anotherMethod() {
        return true;
    }
}
}

Change-Id: I16b87889a3d15c254f5a190e89131ef19a64240b
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.ua/+/180220
Tested-by: Platform Bot <platform-bot@eclipse.org>
15 files changed