SWI-Prolog 5.2.11/XPCE 6.2.11 stable release

Status
======
  
  * Stable release integrating shared-database multi-threaded execution.


Brief summary of changes since 5.2.10
=====================================

SWI-Prolog
----------

  * Small patches

Packages
--------

  * XPCE: Added library(scaledbitmap) and library(url_image).

  * RDF support: various minor problems.

Development environment
-----------------------

  (none)

INCOMPATIBILITIES
=================

  (none)
