Ann: SWI-Prolog 5.6.33

Hi,

I've uploaded SWI-Prolog 5.6.33.  Highlights:

	* Fix to engine pooling, mainly affecting JPL.  Introduced
	with the porting work for Win64.
	* Fix to body decompilation (for not-just-true bodies) that
	can cause a crash.  Affects clause and retract on such
	predicates.  Very old bug.
	* Fix to RDF-DB, where rdf_has/3 could return triples that
	do not match the query.  Old bug.
	* Added library(rbtrees), Red-Black trees copied from Yap.
	There is still some discussion with Vitor (from Yap) on
	details of the API, so please be careful using it.  Docuumented
	using PlDoc only.

Further details below.

	Enjoy --- Jan

================================================================
SWI-Prolog changes since version 5.6.32
================================================================

================================================================
+++ ChangeLog   6 Apr 2007 08:59:46 -0000       1.1417
+
+  * FIXED: Body decompilation with very large terms.  Mike Elston.
+
+  * FIXED: PL_set_engine() to properly release the old engine.  With
+    patch from Ramakrishna Venkatraman.
+
+  * TEST: Some small issues that make it possible to mix the old and
+    new test framework so we can use PlUnit for testing libraries and
+    have it working from "make check".
+
+  * FIXED: Error warnings on illegal 1st byte in UTF-8 sequences.
+    Also fixed utf-8 decoding test suite.
+
+  * ADDED: library(rbtrees), providing Red-Black trees.  Copied with
+    permission from Yap.  Details of the library are still under
+    discussion.

================================================================
+++ packages/plunit/ChangeLog   28 Mar 2007 08:51:25 -0000      1.6
+Mar 28, 2007
+
+* Add option silent(Bool) to force completely silent operation.
+

================================================================
+++ packages/semweb/ChangeLog   30 Mar 2007 11:36:17 -0000      1.134
+Mar 30, 2007
+
+  * FIXED: rdf_has/3 can return triples that should not match.  Jochem
+    Liem.
+
+Mar 27, 2007
+
+  * FIXED: Typo in rdf_estimate_complexity/4 docs.
+