python 3 compatibility
fix order of catkin_LIBRARIES
Merge pull request #546 from ros/library_order

fix order of catkin_LIBRARIES
catkin_make_isolated: fix generated setup.sh for plain cmake package when path contains spaces
modify gtest message level to only warn if gtest is not available but a package trys to register a gtest
Fix to actually build run_depends before the things that depend on them with catkin_make_isolated
Merge pull request #550 from eitanme/groovy-devel

Fix to actually build run_depends before the things that depend on them with catkin_make_isolated
add doc how to run unit tests
update generated cmake api
fix completion of catkin_make(_isolated) for -DCMAKE_BUILD_TYPE and -DCATKIN_ENABLE_TESTING
update cmi command line doc (#534)
modify Python 3 install location when using Debian layout
add comments about python 2 compatibility
cmi: add empty line between packages for better readability
Merge pull request #544 from dirk-thomas/groovy-devel

python 3 compatibility
improve docs on system library dependencies (#552)
fix python destination for 2.x and debian layout (regression of 8210efe52c3020eb89815eb7af59e4af9fd66950, #544)
fixed check if environment exists when using catkin_make_isolated with DESTDIR
Merge pull request #553 from meyerj/catkin-make-isolated-destdir-fix

Using catkin_make_isolated to build Debian packages for a mixed catkin/cmake workspace
fix unit tests (#554)