Semantic Changes
----------------
Line 446: Replaced the domain of mepIdentifier from Message to MessageExchangePattern. mepIdentifier is supposed to be for MEPs

Line 609: Replaced Message with MessageIdentifier. identifiesMessage should be a property whose domain is MessageIdentifier and range is Message

Line 269: Replaced &ResourceModel;#Identifier with #MessageIdentifier. It seems
that MessageIdentifier was defined for this purpose but not used. Inverse relation 
between messageIdentifier and identifiesMessage implies this


Syntactic Changes
-----------------
General : Replaced usage of &xsd; with &xsd;#
General : Replaced owl:domain and owl:range with rdfs:domain and rdfs:range respectively
Line 20 : Added xml:base declaration
Line 410: removed an extra '>'
Line 643: commented the redefinition of identifiesMessage property and cardinality 
restriction on messageIdentifies
Line 199: Added '#' to ID (Same change in Line 230, 276, 306, 333, 363, 453, 575, 
576, 609, 655)
Line 587: Renamed MesageIdentifier with MessageIdentifier
Line 459: Renamed mepIndentifier with mepIdentifier
Line 765: Renamed MessageDescriptinLanguage to MessageDescriptionLanguage
Line 630: Renamed MesagePath to MessagePath
Line 512: Added '#' to the Agent URI (Same change in line 542
Line 329: Renamed Headers to Header