[RFC] %language declaration

[Paolo Bonzini]

Hi everybody,

I plan to implement a Java skeleton for bison; since (if I have time -- 
I don't guarantee anything on this part) I would also like to implement 
GLR parsing for Java, the attached patch attempts to provide a 
"%language" declaration that wraps over "%skeleton".

Together with %language, there is a -L option to determine the language 
from the command-line.

-L and -S are mutually exclusive, as are %language and %skeleton, but 
the command-line options override the grammar directives.

Would something similar, of course with documentation and against 
mainline rather than 2.0, be ok to apply?  The copyright process is in 
the works.

Paolo