code objects: add number of kwonly args to number of regular arguments in Py2...

code objects: add number of kwonly args to number of regular arguments in Py2 (which does not support kwonly arguments for Python functions) to make sure they are still visible for introspection

Cython/Utility/ModuleSetupCode.c

@@ -108,7 +108,7 @@
 #if PY_MAJOR_VERSION < 3
   #define __Pyx_BUILTIN_MODULE_NAME "__builtin__"
   #define __Pyx_PyCode_New(a, k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos) \
-          PyCode_New(a, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
+          PyCode_New(a+k, l, s, f, code, c, n, v, fv, cell, fn, name, fline, lnos)
   #define __Pyx_DefaultClassType PyClass_Type
 #else
   #define __Pyx_BUILTIN_MODULE_NAME "builtins"