patched stacks hector_gazebo and hector_quadrotor to compile them for the current default branch of gazebo (version 1.5)


git-svn-id: https://tu-darmstadt-ros-pkg.googlecode.com/svn/branches/gazebo-1.5/hector_quadrotor@867 362d0299-bcd8-93f0-de3f-00335e8b5ee8
merged from /trunk/hector_quadrotor


git-svn-id: https://tu-darmstadt-ros-pkg.googlecode.com/svn/branches/gazebo-1.5/hector_quadrotor@966 362d0299-bcd8-93f0-de3f-00335e8b5ee8
hector_quadrotor_urdf: fixed sonar height sensor field_of_view (degrees to radians)
hector_quadrotor_controller: fixed time step calculation in propulsion model plugin
hector_quadrotor_gazebo: reduced gaussian noise stddev for barometric pressure from 0.5 to 0.1
Merge remote-tracking branch 'origin/groovy-devel' into fuerte-devel