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.
added iperf and python-visual
fixing type-o
rtmros_hironx: 1.0.18-2 in 'groovy/distribution.yaml' [bloom]
sr_config: 1.3.4-0 in 'indigo/distribution.yaml' [bloom]
Removed tu-darmstadt-ros-pkg source entries

During [RoboCup 2014](http://www.robocup2014.org) there might be several commits in these repos that cause failing devel jobs and will be cleaned up afterwards. Therefore we better switch it off until after the event to avoid build server load and email notifications.
Add libev-dev dep

Needed for mavros devel.
Merge pull request #5055 from 130s/bloom-rtmros_hironx-0

rtmros_hironx: 1.0.18-2 in 'groovy/distribution.yaml' [bloom]
Merge pull request #5056 from shadowmanos/bloom-sr_config-1

sr_config: 1.3.4-0 in 'indigo/distribution.yaml' [bloom]
Merge pull request #5057 from meyerj/patch-5

Removed tu-darmstadt-ros-pkg source entries
Merge pull request #5058 from vooon/rosdep_add_libev

Add libev-dev dep
rosserial_leonardo_cmake: 0.1.0-0 in 'hydro/distribution.yaml' [bloom]
Merge pull request #5059 from mikepurvis/bloom-rosserial_leonardo_cmake-0

rosserial_leonardo_cmake: 0.1.0-0 in 'hydro/distribution.yaml' [bloom]
Update pocketsphinx branches
Merge pull request #5061 from mikeferguson/patch-5

Update pocketsphinx branches
add source entries for catkin, message_generation, message_runtime
wu_ros_tools: 0.1.0-3 in 'hydro/distribution.yaml' [bloom]
laser_filtering: 0.0.2-0 in 'hydro/distribution.yaml' [bloom]
Merge pull request #5063 from DLu/bloom-wu_ros_tools-4

wu_ros_tools: 0.1.0-3 in 'hydro/distribution.yaml' [bloom]