replace-uri not raising error err:FORG0002

[Sorin Marian Nasoi]

From
http://www.w3.org/TR/xpath-functions-30/#func-resolve-uri :

"A dynamic error is raised [err:FORG0002] if $base is not a valid IRI according to the rules of RFC3987, extended with an implementation-defined subset of the extensions permitted in LEIRI, or if it is not a suitable IRI to use as input to the chosen resolution algorithm (for example, if it is a relative IRI reference, if it is a non-hierarchic URI, or if it contains a fragment identifier)."

As a result test-cases 'fn-resolve-uri-26' and 'fn-resolve-uri-28' from 'fn-resolve-uri' test-set are failing: pelase see attached files for details.