1998-10-27  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* src/parser.c (dump_tree): Use extra argument.

	* src/expr.c (function_call_with_values): Use the extra argument
	to symbol_lookup

	* src/func.c (constants_init): Use the extra argument to symbol_install.

	* src/main.c (main): Invoke global_symbol_init.

	* src/symbol.h: Symbol routines now take an extra argument; the
	symboltable they work on.  Now the code can have multiple symbol
	tables (this is required for the cell range name bindings in a
	per-sheet fashion.