[AD] xor problem with Red Hat's 7.0 compiler and 3.9.33

[Ole Laursen <olau@xxxxxxxxxx>]

In WIP 3.9.33 the line (no. 1232)

  AL_FUNC(void, xor_mode, (int xor));

causes a problem when compiling C++ programs on my RH 7.0 box. I guess
the problem is that xor is a reserved keyword in C++ - the equivalent
of a caret. Anyway the problem is easily fixed by removing the name of
the parameter so the line becomes

  AL_FUNC(void, xor_mode, (int));

BTW, the const-correctness fixes are cool - I've just removed a lot of
const_cast from my gstream library. Nice!

-- 
Ole Laursen 
http://sunsite.auc.dk/olau/