Fix warning string.
inflation_layer: place .top() & .pop() calls together

Note that it doesn't make a real difference in this case (you are
inserting new stuff into the queue after the .top(), but it'll always
have a higher cost, so it's fine). Still, it's clearer like this, IMHO.
Some documentation fixes in SimpleTrajectorGenerator
Fix bug in distance calculation for trajectory rollout
Use hypot() instead of sqrt(x*x, y*y)
Fix classloader warnings on exit of move_base
Merge pull request #186 from mikeferguson/fix_classloader_warnings

Fix classloader warnings on exit of move_base
Merge pull request #184 from RainCT/dwa

Use hypot() instead of sqrt(x*x, y*y), it's cleaner
Merge pull request #181 from RainCT/headerdoc

Some documentation fixes for SimpleTrajectorGenerator
Merge pull request #171 from RainCT/hydro-devel

inflation_layer: place .top() & .pop() calls together
Merge pull request #180 from jvia/hydro-devel

Fix output string about amcl configuration