grafx - Extensible Java Graphics Package Code

Changing order of loops in BlockPlacementStrategy again. We're going for
performance AND accuracy.

Moving location of another loop in BlockPlacementStrategy, in order to prevent
excessive computations.

In BlockPlacementStrategy paving way for further optimizations, w.r.t. loop
order.

Fixing all Javadoc warnings.

Changing location of where the block dimensions are computed. This is an
incremental change which is part of an effort to streamline the efficiency in
BlockPlacementStrategy, after the re-ordering of loops w.r.t. considering
post drop slide moves & block orientations.

Embellishing a Javadoc comment in BlockGenerator.

Putting the slide possibilities in the outer loop. This, for now, is a minor
rearrangement of loops, where the outer loop iterates through the
slidePossibilities array, and the secondary loop iterates through the array of
BlockOrientation. As a result the order specified in slidePossibilities, which
currently has Move.POST_DROP_NO_ACTION at the top, takes precedence over block
orientations and block center of rotations. In particular it will cause the
slide moves earlier in the list to take precedence. I need to study this code
a bit more, in order to verify that these statements are accurate. In
addition, some fairly massive optimizations can now be made, which I'm about to
do.

In ComputerPlayer, redefining m_postDropActionExec as a queue of events rather
than a bitwise or'ed field; this way the order of post drop move events (slides
and rotations) can be verified as being correct. The changes turned out to be
very simple and as a result the code is much more robust now.

Making level 28 a bit easier. On level 29, which is the 7-er level, really
focusing on just the 7-er blocks, while inserting massive amounts of very easy
blocks to make the level accomplishable. Taking out all 4-blocks, 5-blocks,
and 6er blocks. The focus is really on just the 7-er blocks.

In WeightedBlock inner class, bumping up the max weight from 100 to 200. We're
going to be using that value in the 7-er block level.