XSB Src (SVN)-old

See source file changes.

Added documentation of load_dyn predicates to load into a specific module.

Added documentation for encoding directive. Updated other related documentatin.

Updated to handle new encoding directive and to start reading load_dyn files in utf-8.

Update to support new encoding directive, and reading of compiled files in utf-8. (Also fix old testing code in table_index.)

updated tests to accord with new :- encoding directive, and default of utf-8 for XSB source code (for compiling and load_dyning).

changes to base 64 to allow compilation with a weird compiler in indonesia

changed io_builtins back to the way it had been. I dont really agree but I dont want to fight.

Added warning when a hash-chain of length > 30000 is run in assert.
Warns of common performance error in XSB.

Updates to reflect that we're now number_chars-ing better.

Fixes to write floats in the standard format (which is changeable).