Handle comma separated decimals in mpstat output

Workaround replacing commas resulting from a German like locale with dots. Previously given message: "mpstat Exception: invalid literal for float(): 0,00"

Actually using some locale setting might be better, but I have no time to check side effects, and this workaround should be free of such.
Merge pull request #223 from felix-kolbe/patch-1

Handle comma-formatted decimals in mpstat output (like in a German locale).
Removed the global EtherCAT lock. Now only the per-interface lock remains
Switch from stack to metapackage.
Catkinize imu_monitor.
Catkinize pr2_bringup and pr2_computer_monitor.
Fix cmake typos.
Add setup.py for pr2_computer_monitor.
Catkinize pr2_camera_synchronizer.
Catkinize pr2_controller_configuration.
Catkinize pr2_etherCAT.
Catkinize pr2_run_stop_auto_restart.