Add gazebo dep for Fedora
Add options/install_flags for boost/pcl.

 - as long as https://github.com/ros-infrastructure/rosdep/pull/304
   is not merged these will be ignored. If we merge this before rosdep
   is updated it will make testing that rosdep change slightly more easy.
 - install_flags will be used for `brew install`, but unlike options
   they are not checked for already installed packages
 - for boost --with-python see https://github.com/ros-infrastructure/rosdep/issues/330
 - for pcl --HEAD on Mavericks see
   - http://answers.ros.org/question/173654/cant-install-pcl-with-homebrew-on-osx-109-during-ros-hydro-installation/
   - https://github.com/ros/homebrew-hydro/issues/3
Make check_rosdep script more robust.
Merge pull request #5028 from RobotnikAutomation/master

Adding robotnik_msgs to documentation index for Groovy and Hydro
Adding my_repo_name to documentation index for distro
mavros: 0.6.0-0 in 'indigo/distribution.yaml' [bloom]
mavros: 0.6.0-0 in 'hydro/distribution.yaml' [bloom]
flir_ptu: 0.1.4-0 in 'hydro/distribution.yaml' [bloom]
flir_ptu: 0.1.4-0 in 'indigo/distribution.yaml' [bloom]
Merge pull request #5029 from vooon/bloom-mavros-2

mavros: 0.6.0-0 in 'indigo/distribution.yaml' [bloom]
Merge pull request #5031 from vooon/bloom-mavros-3

mavros: 0.6.0-0 in 'hydro/distribution.yaml' [bloom]
Made changes requested by dirk-thomas
Merge pull request #5033 from mikepurvis/bloom-flir_ptu-1

flir_ptu: 0.1.4-0 in 'indigo/distribution.yaml' [bloom]
Merge pull request #5032 from mikepurvis/bloom-flir_ptu-0

flir_ptu: 0.1.4-0 in 'hydro/distribution.yaml' [bloom]
Merge pull request #5030 from nwotero/master

Adding my_repo_name to documentation index for distro
ros_ethercat: 0.1.8-0 in 'indigo/distribution.yaml' [bloom]
sr_ronex: 0.9.15-0 in 'indigo/distribution.yaml' [bloom]
Merge pull request #5034 from shadowmanos/bloom-ros_ethercat-12

ros_ethercat: 0.1.8-0 in 'indigo/distribution.yaml' [bloom]
ros_ethercat: 0.1.7-1 in 'hydro/distribution.yaml' [bloom]
sr_ronex: 0.9.14-2 in 'hydro/distribution.yaml' [bloom]