added ddl import unit tests
Updates the target platform and fixes library plugins

* Updates target platform to JBT-IS 4.2.0.Alpha6

* Build files should still depend in target platform installation
Initial implementation of the modeshape teiid sql sequencer

* This sequencer parser is generated from the teiid client's version of
  teiid's javacc template.

* The nodes will be initially generated then committed to wrap modeshape
  AST nodes and the setters used to populate the children and properties
  of these AST nodes.
Adds the jcr-api library to the modeshape library plugin

* Constants actually used by the ddl sequencer and soon by the teiid sql
  sequencer
Changes to code ahead of working with language objects

* StringConstants
 * New constants

* IBinaryType
 * Have the DataTypeManagerService offer up the BinaryType as an interface
   rather than exposing the actual class, allowing the interface of the
   DataTypeManagerService to be used rather than again the implementation.

* ExecutionAdminFactory
 * The DataTypeManagerService must be made available somehow if we are to
   utilise its classes so at least export the admin factory to allow access
Getting the parser and language objects to compile

* First cut of the language objects provides little to no guts of
  each class but outlines the methods requires by both the parser
  and their interfaces.

* The important methods are the setters and it may be the case
  that the getters are simply made to throw unsupported operation
  exceptions
Ensure all objects in sql.lang, sql.proc, sql.symbol are ASTNodes

* Few of the classes are used as wrapper for individual properties

* Better if these classes are ASTNodes as well to ensure their
  properties can be located into modeshape by parser calls.
WIP