line wrap formating

http://docs.ros.org/api/sensor_msgs/html/msg/Imu.html

The webdoc doesn't word wrap, so I was wondering if you thought this is a good idea or not?
make generated cmake relocatable
Merge pull request #17 from ros/relocatable

make generated cmake relocatable
python 3 compatibility
Merge pull request #18 from dirk-thomas/hydro-devel

python 3 compatibility
prefix invocation of python script with PYTHON_EXECUTABLE (ros/genpy#23)
update changelog
"1.10.3"
add a PointCloud2 iterator
add tests for the PointCloud2Iterator
make sure the code complies to the ROS C++ guidelines
make the implementation hidden
improve the docs
Add a proxy class to interact with a sensor_msgs::PointCloud2
update docs and corner cases
Revert "update docs and corner cases"

This reverts commit e949c5a2e002eb6f8026f92915ed7ee6fa36d239.
Revert "Add a proxy class to interact with a sensor_msgs::PointCloud2"

This reverts commit 196dbc854b41784f282d2313ef3d0c76f92a3eb7.
comply to the current padding strategies
add a PointCloud2 modifier
add an assignment operator