Get annotation values from introspection/sctx

[William Candillon]

The following functions should be added:
declare function sctx:function-annotation($function-name as xs:QName, $arity as xs:integer, $annotation as xs:QName) as xs:anyAtomicType* external;
declare function sctx:variable-annotations($name as xs:QName) as xs:QName* external;
declare function sctx:variable-annotation($name as xs:QName, $annotation as xs:QName) as xs:anyAtomicType* external;

[William Candillon (wcandillon)]

The following functions should be added:
declare function sctx:function-annotation($function-name as xs:QName, $arity as xs:integer, $annotation as xs:QName) as xs:anyAtomicType* external;
declare function sctx:variable-annotations($name as xs:QName) as xs:QName* external;
declare function sctx:variable-annotation($name as xs:QName, $annotation as xs:QName) as xs:anyAtomicType* external;

[Matthias Brantner (matthias-brantner)]

I would prefer having a function annotation($name as xs:QName, $arity as xs:integer) to return something as follows:

<QNameOfAnnotation><value>StringLiteral1</value><value>StringLiteral2</value><QNameOfAnnotation>

or

<annotation><name>QNameOfAnnotation</name><value>StringLiteral1</value><value>StringLiteral2</value><annotation>

[William Candillon (wcandillon)]

I have implemented one of the function at https://code.launchpad.net/~zorba-coders/zorba/bug897588