staticforward bites the dust.

The staticforward define was needed to support certain broken C
compilers (notably SCO ODT 3.0, perhaps early AIX as well) botched the
static keyword when it was used with a forward declaration of a static
initialized structure.  Standard C allows the forward declaration with
static, and we've decided to stop catering to broken C compilers.  (In
fact, we expect that the compilers are all fixed eight years later.)

I'm leaving staticforward and statichere defined in object.h as
static.  This is only for backwards compatibility with C extensions
that might still use it.

XXX I haven't updated the documentation.
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index 3b194b3..5314dcf 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -276,7 +276,7 @@
    The sock_type variable contains pointers to various functions,
    some of which call new_sockobject(), which uses sock_type, so
    there has to be a circular reference. */
-staticforward PyTypeObject sock_type;
+static PyTypeObject sock_type;
 
 /* Convenience function to raise an error according to errno
    and return a NULL pointer from a function. */