AP_Scripting: fixed float register save/restore in setjmp/longjmp

the register save must happen before the setjmp() call, which means
outside of the LUAI_TRY() macro. We also should be saving all 32
floating point registers

libraries/AP_Scripting/lua/src/ldo.c

@@ -142,14 +142,16 @@ int luaD_rawrunprotected (lua_State *L, Pfunc f, void *ud) {
   lj.status = LUA_OK;
   lj.previous = L->errorJmp;  /* chain new error handler */
   L->errorJmp = &lj;
-  LUAI_TRY(L, &lj,
 #ifdef ARM_MATH_CM7
+    __asm__("vpush {s0-s15}");
     __asm__("vpush {s16-s31}");
 #endif
+  LUAI_TRY(L, &lj,
     (*f)(L, ud);
   );
 #ifdef ARM_MATH_CM7
   __asm__("vpop {s16-s31}");
+  __asm__("vpop {s0-s15}");
 #endif
   L->errorJmp = lj.previous;  /* restore old error handler */
   L->nCcalls = oldnCcalls;