fixing problem that I introduced earlier with ctl files not being loaded when package is installed from install.xml file and the the proc apm_packages_full_install. The problem was that no data model files were provided and the proc apm_data_model_scripts_find was used to provide the default. However, that proc would not return ctl files. I therefore changed it to do so and removed the proc apm_ctl_files_find that we no longer need