[antlr-interest] pushed antlr build with tree rewriting and composite grammars (java)

[Terence Parr]

This has lots of little fixes and the composite grammar stuff  
working.  Look at

http://fisheye2.cenqua.com/browse/antlr-examples

for the composite-java example to show how I broke up the java grammar.

polydiff example to show how tree construction works in tree parser.  
tree rewriting.

Grab

http://www.antlr.org/download/build/antlr-2008-01-10.16.tar.gz

Ter