Apache Forrest code update (bug FOR-955,FOR-1017)

code update
by
TS
(fixes bug FOR-955,FOR-1017)

:

Our packaged version of Apache Cocoon has been upgraded to use the
latest version of their stable 2.1 branch. This is a major step forward
for Forrest. It enables us to use a reliable and up-to-date Cocoon.
Forrest developers can again participate at Cocoon to fix issues or
develop new blocks. A number of major performance issues are already
fixed in this version. Also upgraded various other important supporting
products such as Apache Xerces and Apache Xalan, etc.
See upgrading notes.
Thanks to Thorsten Scherler, David Crossley.