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

This reverts commit ba8e6a7a1c9bca184188fe5bdc27767979bb671d.
Rebase from 'upstream' (no changes)
Trimmed the branch to only the jsk_ros_patch/laser_filters_jsk_patch sub directory