recently deprecated syntax issues

[Brian M. Sutin]

I just recompiled a program for the first time in about a year, with Bison
3.0.2.  The warning output is:

    L2.yy:32.1-13: warning: deprecated directive, use ‘%name-prefix’ 
[-Wdeprecated]
     %name-prefix="L2"
     ^^^^^^^^^^^^^
    L2.yy:35.1-8: warning: deprecated directive, use ‘%output’ [-Wdeprecated]
     %output="tmp_L2.cc"
     ^^^^^^^^
    L2.yy:42.9-21: warning: deprecated directive, use ‘%define api.push-pull 
both’ [-Wdeprecated]
     %define api.push_pull "both"
             ^^^^^^^^^^^^^
    L2.yy:42.9-21: warning: %define variable 'api.push-pull' requires keyword 
values [-Wdeprecated]
     %define api.push_pull "both"
             ^^^^^^^^^^^^^

A little googling revealed that %name-prefix has been replaced by "%define
api.prefix".  I tried that swap, and the changes are not quite 1-to-1. Although
the code didn't compile without requiring changes, I believe that some of my
evil hacks regarding YYSTYPE will be able to be removed.

The other three errors are a mystery.  Are these due to bugs in this version,
or as-yet-undocumented improvements?  Also, these warning messages are all un-
helpful.

Brian

-- 
Brian M. Sutin, Ph.D.           Electro-Optical Systems Engineering
Skewray Research/750 W 8th St/Claremont CA 91711 USA/(909) 293-0026