Enhance CBS scripts to pull configured application dependencies

[dennis-behm]

With the recent updates of PackageBuildOutputs script, the application teams can export shared components (copybooks or even OBJ decks) via the produced tar file.

This enhancement is about pulling these dependencies automatically during the build phase based on references in the ApplicationDescriptor.

Expected outcome is to have

• a generic script that is available to both zBuilder.sh and dbbBuild.sh
• a flag to turn this on (based on the presence of the Application Descriptor).

[dennis-behm]

This has been delivered with #299