py: Fix static defn in qstr; include mpconfigport.h with "" (not <>).

py/mpconfig.h

@@ -28,7 +28,7 @@
 // You can override any of these options using mpconfigport.h file located
 // in a directory of your port.
 
-#include <mpconfigport.h>
+#include "mpconfigport.h"
 
 // Any options not explicitly set in mpconfigport.h will get default
 // values below.

py/qstr.c

@@ -77,7 +77,7 @@ typedef struct _qstr_pool_t {
     const byte *qstrs[];
 } qstr_pool_t;
 
-const static qstr_pool_t const_pool = {
+STATIC const qstr_pool_t const_pool = {
     NULL,               // no previous pool
     0,                  // no previous pool
     10,                 // set so that the first dynamically allocated pool is twice this size; must be <= the len (just below)