some J3D/misc cleanup (#2628)

* some j3d cleanup

* begin using uintptr_t

* j3dgraphbase cleanup

* j3dgraphanimator cleanup

src/PowerPC_EABI_Support/MSL/MSL_C++/MSL_Common/Include/stdint.h

@@ -0,0 +1,22 @@
+#ifndef MSL_STDINT_H_
+#define MSL_STDINT_H_
+
+#include <cstdint.h>
+
+#ifdef __cplusplus
+    using std::uint8_t;
+	using std::uint16_t;
+	using std::uint32_t;
+
+    using std::int8_t;
+	using std::int16_t;
+	using std::int32_t;
+
+    using std::uint64_t;
+    using std::int64_t;
+
+    using std::uintptr_t;
+    using std::intptr_t;
+#endif
+
+#endif

src/PowerPC_EABI_Support/Runtime/Src/__va_arg.c

@@ -1,4 +1,5 @@
 #include "__va_arg.h"
+#include <stdint.h>
 
 #undef __va_arg
 
@@ -38,7 +39,7 @@ void* __va_arg(_va_list_struct* list, int type) {
     } else {
         *reg = 8;
         addr = list->input_arg_area;
-        addr = (char*)(((u32)(addr) + ((size)-1)) & ~((size)-1));
+        addr = (char*)(((uintptr_t)(addr) + ((size)-1)) & ~((size)-1));
         list->input_arg_area = addr + size;
     }
 
@@ -47,4 +48,4 @@ void* __va_arg(_va_list_struct* list, int type) {
     }
 
     return addr;
-}
+}