XSB Src (SVN)-old

Made the action of abort/0 like that of the new abort/1

Took out close_open_tables calls from error handlers. This has been done in unwind stack for several years and is not needed. Furthermore,
having it in the handlers messes things up when aborting a computation in a break (where a tabled computation was suspended).

added epoch_milliseconds/2

Minor updates to be a little more helpful.

Finished code to support abort_all and abort_level.

Commit of experimental code for abort_all/1.

Got rid of spurious warning when interrupting XSB command line w. ctrl-c.

Changes to index to include manuals.

Updated version of the manuals and got rid of a blank page (to put up on the web).

Fixed minor spelling typo noticed by Annie.