XSB Src (SVN)-old

Took out term_abstract (code is now in tables.P)

Minor change to print out "Unhandled Exception" message when the
programmer throws an unrecognized ball, but provides no user error
handler. (There may be a better way to do this, but just a quiet
return to top level in this case seemed not very helpful to the user.)

fixed indexes in the manuals. use imakeidx instead of index - a much better package
that dosnt require convoluted shell scripts.

Changing variable names, to help distinguish similar trie code for subgoals, answers, and asserted tries.

Changed a few macro names for clarity.

Fixed case in call/n where explicit module qualification was not working properly.

Added explicit module qualification to routines that use abstraction; moved 2 term
abstraction routines into this module.

forgot this one.

Added this a while ago, forgot to commit.

Update to use explicit module qualification to abstract terms.