Patch #445762: Support --disable-unicode

- Do not compile unicodeobject, unicodectype, and unicodedata if Unicode is disabled
- check for Py_USING_UNICODE in all places that use Unicode functions
- disables unicode literals, and the builtin functions
- add the types.StringTypes list
- remove Unicode literals from most tests.

Include/unicodeobject.h

@@ -58,6 +58,12 @@ Copyright (c) Corporation for National Research Initiatives.
 
 /* --- Internal Unicode Format -------------------------------------------- */
 
+#ifndef Py_USING_UNICODE
+
+#define PyUnicode_Check(op)                 0
+
+#else
+
 /* FIXME: MvL's new implementation assumes that Py_UNICODE_SIZE is
    properly set, but the default rules below doesn't set it.  I'll
    sort this out some other day -- fredrik@pythonware.com */
@@ -1087,4 +1093,5 @@ extern DL_IMPORT(int) _PyUnicode_IsAlpha(
 #ifdef __cplusplus
 }
 #endif
+#endif /* Py_USING_UNICODE */
 #endif /* !Py_UNICODEOBJECT_H */