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

This reverts commit e871874447f5e8b59b61beed0fbd820d37a4bc23.
Rebase from 'upstream' (no changes)
Trimmed the branch to only the jsk_ros_patch/laser_filters_jsk_patch sub directory