update some actors to use sizeof for mSize, endian swap J2DScreen related structs, add 64bit endian swapping

game appears to be hanging on fully initing some processes, so while there isnt an immediate crash, nothing seems to be happening

src/JSystem/JSupport/JSUInputStream.cpp

@@ -25,6 +25,7 @@ char* JSUInputStream::read(char* str) {
         setState(IOS_STATE_1);
         return 0;
     }
+    be_swap(sp8);
 
     s32 len = readData(str, sp8);
     str[len] = 0;