- change AbstractCommentParser.getTokenEndPosition() to be protected
- add module-info support to CompilationUnitDeclaration.resolve()
- add new IProblem values for @provides and @uses errors
- add new code to Javadoc resolve(Methodscope) method to support
  parsing module-info javadoc
- add resolveUsesTags() and resolveProvidesTags() methods to Javadoc to
  check tags against actual uses and provides statements
- add parseUsesReference() and parseProvidesReference() methods to
  JavadocParser to parse @uses and @provides tags
- add new IProblem messages to messages.properties
- add javadoc field to ModuleDeclaration
- add new uses and provides tag error support to ProblemReporter
- in Parser.consumeModuleDeclaration() set up compilationUnit javadoc
- add new javadocModuleMissing method to ProblemReporter
- add new JavadocTestForModule test class
- add new IJavadocTypeReference interface and have
  JavaQualifiedTypeReference and JavaSingleTypeReference implement it

Change-Id: Ib4eff519fe53c1fdb9ceca5d480dccb55aa23ab8