hydro: udpate some Qt packages.
hydro: udpate desktop_full.
hydro: add hector_slam and its dependencies.
Update README.md (-rfu)
hydro: update openhrp3.
Merge branch 'arch' into chakra

Conflicts:
	README.md
	hydro/rosdoc_lite/PKGBUILD
dependencies: add catkin_lint
dependencies/catkin_lint: fix description
Merge branch 'arch' into chakra