Add Nintendo Switch port.

Contributed by Swyter and vdweller84.

src/lj_dispatch.h

@@ -89,7 +89,7 @@ typedef uint16_t HotCount;
 typedef struct GG_State {
   lua_State L;				/* Main thread. */
   global_State g;			/* Global state. */
-#if LJ_TARGET_ARM
+#if LJ_TARGET_ARM && !LJ_TARGET_NX
   /* Make g reachable via K12 encoded DISPATCH-relative addressing. */
   uint8_t align1[(16-sizeof(global_State))&15];
 #endif
@@ -99,7 +99,7 @@ typedef struct GG_State {
 #if LJ_HASJIT
   jit_State J;				/* JIT state. */
   HotCount hotcount[HOTCOUNT_SIZE];	/* Hot counters. */
-#if LJ_TARGET_ARM
+#if LJ_TARGET_ARM && !LJ_TARGET_NX
   /* Ditto for J. */
   uint8_t align2[(16-sizeof(jit_State)-sizeof(HotCount)*HOTCOUNT_SIZE)&15];
 #endif