vision_visp: 0.7.4-0 in 'hydro/distribution.yaml' [bloom]

Increasing version of package(s) in repository `vision_visp` to `0.7.4-0`:

- distro file: `hydro/distribution.yaml`
- bloom version: `0.5.10`
- previous version for package: `0.7.3-1`

## vision_visp

```
* Prepare changelogs
* Contributors: Fabien Spindler
```

## visp_auto_tracker

```
* Update and fix content of README files
* Fixed bag dowload in tracker
* Prepare changelogs
* Contributors: Fabien Spindler, Riccardo Spica
```

## visp_bridge

```
* Update and fix content of README files
* Revised with comments from fspindle
* Changed the way boost is linked
* Renamed conversion tool
* Mark camera parameter converter for installation
* minor changes
* Support for distortion camera parameter model
* Delete existing output file
* tool for converting visp camera parameter files to/from ros camera  parameter files
* Prepare changelogs
* Contributors: Fabien Spindler, Riccardo Spica
```

## visp_camera_calibration

```
* Update and fix content of README files
* Fix to allow calibration on images that are not 640x480
* Prepare changelogs
* Contributors: Fabien Spindler
```

## visp_hand2eye_calibration

```
* Update and fix content of README files
* Prepare changelogs
* Contributors: Fabien Spindler
```

## visp_tracker

```
* Update and fix content of README files
* Prepare changelogs
* Contributors: Fabien Spindler
```