vlc node for video recording and streaming

* streamer server from libvlc
* recorder class to start and stop recording
* vlc ros node to dispatch rcps from other ros nodes
* clean up spacing in usbmissile
adding rosvlc to roslaunch
blah
vlc feature change

* vlc shifts from streaming to recording
* initializer for ros_vlc to be a python package/module
Merge branch 'libvlc' of github.com:bordicon/rospilot into libvlc

Conflicts:
	launch/rospilot.launch
	nodes/ros_vlc.py
bug fixes for vlc node
update apt-get-deps to include libvlc
major update for media streaming

* promote media paths to launch options
* cleaned up vlc recording
* added timestamps to videos
Switch to compressed image stream. Reduces cpu usage from ~130% to 20% on Pandaboard ES