Use the preprocessor to rename external functions of the SWIG runtime

API to follow the naming convention SWIG_<language>_<function>.  This
should allow linking more than one interpreter into a program.


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@5242 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Lib/python/precommon.swg

@@ -0,0 +1,16 @@
+/*************************************************************** -*- c -*-
+ * python/precommon.swg
+ *
+ * Rename all exported symbols from common.swg, to avoid symbol
+ * clashes if multiple interpreters are included
+ *
+ ************************************************************************/
+
+#define SWIG_TypeRegister    SWIG_Python_TypeRegister
+#define SWIG_TypeCheck       SWIG_Python_TypeCheck
+#define SWIG_TypeCast        SWIG_Python_TypeCast
+#define SWIG_TypeDynamicCast SWIG_Python_TypeDynamicCast
+#define SWIG_TypeName        SWIG_Python_TypeName
+#define SWIG_TypeQuery       SWIG_Python_TypeQuery
+#define SWIG_TypeClientData  SWIG_Python_TypeClientData
+

Lib/python/python.swg

@@ -10,6 +10,7 @@
 #include "Python.h"
 %}
 
+%insert(runtime) "precommon.swg";
 %insert(runtime) "common.swg";          // Common type-checking code
 %insert(runtime) "pyrun.swg";           // Python run-time code