added object manipulation msgs package
added manifest for object manipulation msgs package
removed unused headers
replaced the deprecated pcl_conversion header
added pcl dependecies
backing up minor changes.  Next version(s) will have the extern global variables in a class
removed service definition file. Now part of object_manipulation msgs in supplements
made all functions (tasks) into methods of the PickAndPlace Class
does not plublish to tf
reduced longest valid segment fraction in order to suppress the tf lookup errors, problem persists