started clearing out
message tests moved to rosjava_bootstrap/message_generator.
divert few remaining bootstrap classes to rosjava package itself.
rosdeps now handled by rosjava_build_tools and rosdistro.
fixing plugin and rosjava dependencies.
test_ros -> rosjava_test_msgs
fix install path.
message generation tests moved back in, they need the full suiet of
rosjava_messages.
use catkin package xml version information
Merge pull request #174 from rosjava/releases

First official hydro release going in