jogl: fix two impossible comparisons in glu/tessellator

The comparison to Long.MAX_VALUE will never trigger as it is coparing with an int.
The intent of this code appears to be to check against Integer.MAX_VALUE which is
used as an error code (unable to allocate sufficiently large array) from the
priorityQueue.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
jogl: allow case statements to fall through to same block

This block is falling through to the next cases where there two variables are
set to the same values.  Just remove this block and let all cases fall through to
the same block.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
jogl: fix typo in RandomTileRenderer, range chack was for tY, not tX again

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
jogl: avoid creating a second String object, one is enough

One String is already being built, passing it to new String() is just wasteful as
the temp String can be returned just as easily.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>