Merge pull request #93 from trungdong/template

Minor corrections and comments
fixed variable substitution over membership
fixing bug about parsing compact form of xsd:int in provn
fixing bug about parsing compact form of xsd:int in provn
fixed bug in expander when no variable present
refactoring of interop framework
prov interop: writing to stream
prov interop: writing to stream
debugging namespace issue
debugging namespace issue
fixed bug in namespace management in the presence of bundles
interop writeDocument to stream, support for prov-vservice
narrowed some thrown exceptions
removed qnExporter in NotationConstruction, now relying on current namespace
more constants
interop, deserialization from a stream (wip)
Changed: Output "prov:QualifiedName" as the type of QualifiedName values
(instead of "xsd:QName")