Add comments and javadocs.
NCPBukkitCompat: Ensure some full blocks are not ignored by passable.
Plugin class: Add a method for processing reload.
MCAcessBukkit: Also make Glowstone an exception.
Confine lost-ground check for block edges further.
Forgot to rename this one.
Add methods for further testing of directions and similar.
RayTracing: Add ability to check number of steps done.

Now available in the abstract base class.
Use hard limits for maximum number of steps for ray-tracing.

This concerns both blockinteract.visible and moving.passable, both set
to 60. In effect extreme moves are impossible with either check
activated. Mind that 60 steps could be something like 20 blocks for some
cases, probably even less.