Improving standard compiler compatibility (#2926)

* Adding explicit dolphin/ prefix & fix characters

* Rename ShiftJIS to SJIS

* Separate JASSeqReader read methods implementation between compilers.

* Fix pointer.h

* fix d_item_data typo

* fix gcn matching issue

src/JSystem/JUtility/JUTException.cpp

@@ -7,7 +7,7 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <dolphin.h>
+#include <dolphin/dolphin.h>
 #include <stdint.h>
 
 OSMessageQueue JUTException::sMessageQueue = {0};