Standardize all commands to use pigscripts/my_script.pig instead of my_script
Display pigscripts with full paths
Add tests that deprecated no-path pigscript and control path syntax continue to work
Merge pull request #98 from mortardata/ddaniels_standardize_full_path_pigscript_and_controlscript

[#49682045] Standardize all commands to use pigscripts/my_script.pig instead of my_script