IMPORTANT NOTE:

The Grammar in Grammar.java uses a parser an XmlAnnotationParser for
parsing XML annotations. This parser needs to be first generated in
order for Grammar.java to compile - which introduces a chicken-and-egg
situation. It is therefore impossible to regenerate all the class files
from the java sources in one go. So we need a bootstrapping process in
order to compile the whole ilog.language.syntax package :

(1) Configure Jacc sources (only Grammar.java) so as it will generate a
    parser that does not enable parsing XML annotations - this is
    feasible because the grammar for XML annotations is very simple and
    does not use XML annotations itself (see files in subdir /xml).

    To do so commment out all parts in Grammar.java bracketed between:
    // BEGIN COMMENT OUT FOR NO XML ANNOTATION PARSER
    ...
    // END COMMENT OUT FOR NO XML ANNOTATION PARSER

(2) Recompile Jacc by regenerating the ilog.language.syntax package
    (i.e., do 'make syntax' in this directory's parent directory).

(3) Using this simpler version of Jacc, generate an XmlAnnotationParser
    (i.e., go to  this directory's xml/ subdirectory and do 'make').

(4) Reconfigure Jacc (i.e., Grammar.java) so as it may generate a parser
    that enables parsing XML annotations - i.e., uncomment the commented
    parts above.

For now, we simply indicate the parts in file Grammar.java that need to
be commented out between comments as indicated above.  Ideally, the Make
file should contain a 'make bootstrap' to automate these steps.