Token – Header File Refactoring

With the new table model, the token class will contain a pointer to the table entry of the code instead of the code enumerator (currently used as an index).  The table header file currently includes the token header file for the many table functions with a token pointer argument.  This is no longer necessary since only token pointer and token pointer references are used (forward declarations are sufficient).

When the token class contains a pointer to the table entry, optimal access to the table entry members will be achieved if the entry access functions are defined in-line.  Similarly, optimal access indirectly through to the token access functions to the table members is desired.  This will require the table header file to be included in the token header file.

Therefore, some header file refactoring was performed where the token header include statements were moved from all the other header files to the associated source file with the exception of the table header file, which is uses the token type enumeration.  When this enumeration is replaced with the code type enumeration, this statement can be removed.  Forward declarations were added as needed.

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