updates to support for statements
updates to multiplicity syntax
removing System.out calls
updating constant
updated multiplicity syntax
Implementation of XDI datatypes  "Methods for data type XRIs" and
"Methods for data types of literals" section in DataType.java and
test-cases in DataTypesTest.java
update registry.xdi
updated registry.xdi for new multiplicity syntax
*** Update to the way the XriResolutionServletEndpointInterceptor works

*** Updates to applicationContext.xml to registry to use =danube and
=!BDF3.1FB.E70C.3958 as examples
Updates for RegistryGraphMessagingTargetFactory and
XriResolutionEndpointServletInterceptor, and updated examples
Merge remote-tracking branch 'shreymehrotra/master'
added tests
timestamp syntax
small optimization for finding data types
fixing multiplicity in graph1.xdi of XDIValidator
preparing for module architecture
adding support for oauth token
changing user agent to XDI2
fixing javadoc
updates to CopyUtil and XRIUtil