XSB Src (SVN)-old

Added documentation for normal, weibull, and exponential random number
generation, and documentation of O'Keefe's heaps.pl. Also, cleaned up
some indexes.

corrected mysql driver

added mysqlembedded driver

Tests of some new arithmetic changes.

Added constraint/attribute portray hooks.

Added pi/0, e/0.

Also, added message(ln), warning(ln), and console_write(ln) to
the manual.

Main changes were to tp_eval.P in compiler so that constant
functions could be defined to the compiler within arithmetic
expressions. Using this change, I added pi/0 and e/0 to the
compiler (they are already in the evaluator). These changes are
quite local, and should not affect arithmetic changes that David
might make (I hope).

Also, while I was there, I tweaked an error message or two to
make their messages more comprehensible.

Adding (the correct version of) bounds.xwam as is can be a little difficult to compile.

Also, upated bounds.pl with a portray hook so that you can see the values of the variables in the command line.

adding .xwam as it can be a little tricky to compile due to operators.

Adding bounds package.

Minor change to take out exported predicate that was not needed.