The compile builtin function now can take an AST node, as produced by
a previous usage of compile with the compiler flag
_ast.PyCF_ONLY_AST. Generally this would be after some modification of
the AST itself. Another 2.6 feature.

Files:
modified: /trunk/jython/src/org/python/core/__builtin__.java (try)
modified: /trunk/jython/src/org/python/core/Py.java (try)