Expose Subversion revision number (calculated via "svnversion .") to Python.
Add C API function Py_GetBuildNumber(), add it to the interactive prompt
banner (i.e. Py_GetBuildInfo()), and add it as the sys.build_number
attribute. The build number is a string instead of an int because it may
contain a trailing 'M' if there are local modifications.
diff --git a/Include/pythonrun.h b/Include/pythonrun.h
index e309078..6cf33d8 100644
--- a/Include/pythonrun.h
+++ b/Include/pythonrun.h
@@ -108,6 +108,7 @@
PyAPI_FUNC(const char *) Py_GetCopyright(void);
PyAPI_FUNC(const char *) Py_GetCompiler(void);
PyAPI_FUNC(const char *) Py_GetBuildInfo(void);
+PyAPI_FUNC(const char *) Py_GetBuildNumber(void);
/* Internal -- various one-time initializations */
PyAPI_FUNC(PyObject *) _PyBuiltin_Init(void);