b4_table_declare.

b4_table_declare.

	* data/lalr1.cc (b4_table_declare): New.
	Use it to declare the tables defined with b4_table_define.
	(b4_table_define): Declare a third arg to match b4_table_declare
	signature.
	Move all the comments around invocations of b4_table_define into
	the invocations itselves.
	Move things around to have the order for declarations and
	definitions.