Dependency updates

[nbelaevski]

Current RichFaces 3.3.1-SNAPSHOT has been just updated to JQuery 1.3.1: http://docs.jquery.com/Release:jQuery_1.3

[alex.kolonitsky]

Current RichFaces 3.3.1-SNAPSHOT has been just updated to commons-digester 2.0 and We exluded xercesImpl dependency from htmlunit and added xercesImpl 2.9.1 dependency to richfaces-test