catkin: 0.5.88-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `catkin` to `0.5.88-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.10`
- previous version for package: `0.5.86-0`

## catkin

```
* reset CATKIN_SHELL in devel space generated env.sh files (#652 <https://github.com/ros/catkin/issues/652>, #655 <https://github.com/ros/catkin/issues/655>)
* ignore cd path echo when using CDPATH (#654 <https://github.com/ros/catkin/issues/654>)
* expose PYTHON_EXECUTABLE to environment hook .em templates (#645 <https://github.com/ros/catkin/issues/645>)
```