all: Remove inclusion of internal py header files.

Header files that are considered internal to the py core and should not
normally be included directly are:
    py/nlr.h - internal nlr configuration and declarations
    py/bc0.h - contains bytecode macro definitions
    py/runtime0.h - contains basic runtime enums

Instead, the top-level header files to include are one of:
    py/obj.h - includes runtime0.h and defines everything to use the
        mp_obj_t type
    py/runtime.h - includes mpstate.h and hence nlr.h, obj.h, runtime0.h,
        and defines everything to use the general runtime support functions

Additional, specific headers (eg py/objlist.h) can be included if needed.

drivers/cc3000/src/ccspi.c

@@ -34,8 +34,6 @@
 
 #include <string.h>
 
-#include "py/nlr.h"
-#include "py/obj.h"
 #include "py/runtime.h"
 #include "pin.h"
 #include "led.h"

extmod/machine_mem.c

@@ -24,8 +24,8 @@
  * THE SOFTWARE.
  */
 
+#include "py/runtime.h"
 #include "extmod/machine_mem.h"
-#include "py/nlr.h"
 
 #if MICROPY_PY_MACHINE
 

extmod/modbtree.c

@@ -29,9 +29,7 @@
 #include <errno.h> // for declaration of global errno variable
 #include <fcntl.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
-#include "py/runtime0.h"
 #include "py/stream.h"
 
 #if MICROPY_PY_BTREE

extmod/modframebuf.c

@@ -27,8 +27,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "py/nlr.h"
-#include "py/obj.h"
 #include "py/runtime.h"
 
 #if MICROPY_PY_FRAMEBUF

extmod/modlwip.c

@@ -29,7 +29,6 @@
 #include <string.h>
 #include <stdio.h>
 
-#include "py/nlr.h"
 #include "py/objlist.h"
 #include "py/runtime.h"
 #include "py/stream.h"

extmod/modubinascii.c

@@ -28,7 +28,6 @@
 #include <assert.h>
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/binary.h"
 #include "extmod/modubinascii.h"

extmod/moductypes.c

@@ -28,7 +28,6 @@
 #include <string.h>
 #include <stdint.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/objtuple.h"
 #include "py/binary.h"

extmod/moduhashlib.c

@@ -27,7 +27,6 @@
 #include <assert.h>
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 
 #if MICROPY_PY_UHASHLIB

extmod/moduheapq.c

@@ -24,9 +24,7 @@
  * THE SOFTWARE.
  */
 
-#include "py/nlr.h"
 #include "py/objlist.h"
-#include "py/runtime0.h"
 #include "py/runtime.h"
 
 #if MICROPY_PY_UHEAPQ

extmod/modujson.c

@@ -26,7 +26,6 @@
 
 #include <stdio.h>
 
-#include "py/nlr.h"
 #include "py/objlist.h"
 #include "py/objstringio.h"
 #include "py/parsenum.h"

extmod/modurandom.c

@@ -27,7 +27,6 @@
 #include <assert.h>
 #include <string.h>
 
-//#include "py/nlr.h"
 #include "py/runtime.h"
 
 #if MICROPY_PY_URANDOM

extmod/modure.c

@@ -28,7 +28,6 @@
 #include <assert.h>
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/binary.h"
 #include "py/objstr.h"

extmod/modussl_axtls.c

@@ -27,7 +27,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/stream.h"
 

extmod/modussl_mbedtls.c

@@ -31,10 +31,8 @@
 #include <string.h>
 #include <errno.h> // needed because mp_is_nonblocking_error uses system error codes
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/stream.h"
-#include "py/obj.h"
 
 // mbedtls_time_t
 #include "mbedtls/platform.h"

extmod/modutimeq.c

@@ -27,9 +27,7 @@
 
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/objlist.h"
-#include "py/runtime0.h"
 #include "py/runtime.h"
 #include "py/smallint.h"
 

extmod/moduzlib.c

@@ -27,7 +27,6 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/stream.h"
 #include "py/mperrno.h"

extmod/modwebrepl.c

@@ -28,8 +28,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "py/nlr.h"
-#include "py/obj.h"
 #include "py/runtime.h"
 #include "py/stream.h"
 #include "py/builtin.h"

extmod/modwebsocket.c

@@ -28,8 +28,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "py/nlr.h"
-#include "py/obj.h"
 #include "py/runtime.h"
 #include "py/stream.h"
 #include "extmod/modwebsocket.h"

extmod/uos_dupterm.c

@@ -27,7 +27,6 @@
 #include <string.h>
 #include "py/mpconfig.h"
 
-#include "py/nlr.h"
 #include "py/runtime.h"
 #include "py/objtuple.h"
 #include "py/objarray.h"

extmod/vfs.c

@@ -27,7 +27,6 @@
 #include <stdint.h>
 #include <string.h>
 
-#include "py/runtime0.h"
 #include "py/runtime.h"
 #include "py/objstr.h"
 #include "py/mperrno.h"