Revert "Trimmed the branch to only the jsk_ros_patch/laser_filters_jsk_patch sub directory"

This reverts commit ca3c13f4e886f9f9cca3342196bdb23337d6d42e.
Rebase from 'upstream' (no changes)
Trimmed the branch to only the jsk_ros_patch/laser_filters_jsk_patch sub directory