fixed CMakeLists
proper topic names in velodyne aggregator node
log_run now saves the parameters

- saving the parameters and the config files in a tar.gz file along with
  the data
- reviewed what topics are skipped
Merge branch 'master' of https://github.com/StanfordDrivingTeam/driving_public
Added start time to log readers

for bag files: directly opening at the right location. For dgc files,
reading data until we get to the right point, which is less efficient.

also replaced all double time occurences with ros::Time
Merge branch 'master' of https://github.com/StanfordDrivingTeam/driving_public
rxplot: x axis shows time from 0
Merge branch 'master' of https://github.com/StanfordDrivingTeam/driving_public
corrected velodyne namespaces and mapping
Fix cmake
improved error reporting in rxplot
Fix localize_pose_tf_broadcaster
moved track_tools from the private repo
Merge branch 'master' of github.com:StanfordDrivingTeam/driving_public
Add missing tf dependency
some changes in the track_tools API

to better handle constness and the cached values
Merge branch 'master' of github.com:StanfordDrivingTeam/driving_public
added comments to smpToPCL in track_tools
introduced version 2 of the track file format. not compiling yet.
fixed track_file_tools