varasm.c (assemble_start_function): Remove the function from the pending weak decls list when we define a function.

        * varasm.c (assemble_start_function): Remove the function
        from the pending weak decls list when we define a function.
        (assemble_variable): Similarly for variables.
        (weak_finish): Ignore items on the list with a NULL name.
        (remove_from_ending_weak_list); New function to "remove" an item
        from the pending weak declarations list.

Co-Authored-By: Jeffrey A Law <law@cygnus.com>

From-SVN: r27402