* adds a work_queue systemcmd that will bring a tree view of all active work queues and work items
* WorkQueues now track attached WorkItems and will shutdown when the last WorkItem is detached
Script to update include paths:
for i in $(grep -rl 'include <px4_work_queue' src platforms); do sed -i 's/#include <px4_work_queue/#include <px4_platform_common\/px4_work_queue/' $i; done
Remove ioctl calls by always starting cycling
Remove unused orb variables and includes
Remove unused angle from irlock_s structure
Add test and set I2C address to pixy default
Reduce max num objects to 5
Add read errors reporting via nsh
Daniel Agar