Add guards around std library headers (#3013)

* Last fix for standard compiler error

* adding define guards around headers

* rename cmath.h and climits.h to cmath and climits respectively

* renaming cstdarg.h to cstdarg

* renaming cstdlib.h to cstdlib

* renaming cstring.h to cstring

* renaming cstdio.h to cstdio

* renaming cmath locale ctype

* renaming stdarg string and va_list

* renaming cstddef

* renaming stdio stddef stdlib

* renaming algorithm, functional, iterator, memory, and utility

* renaming bitset, cstdint, limits, and stdint

* renaming new and type_traits

* update quote includes for standard library headers to angle bracket includes

include/JSystem/JKernel/JKRExpHeap.h

@@ -2,7 +2,7 @@
 #define JKREXPHEAP_H
 
 #include "JSystem/JKernel/JKRHeap.h"
-#include <stdint.h>
+#include <stdint>
 
 /**
  * @ingroup jsystem-jkernel

include/JSystem/JKernel/JKRHeap.h

@@ -204,9 +204,11 @@ void* operator new[](size_t size, JKRHeap* heap, int alignment);
 void operator delete(void* ptr);
 void operator delete[](void* ptr);
 
+#ifdef __MWERKS__
 inline void* operator new(size_t size, void* ptr) {
     return ptr;
 }
+#endif
 
 void JKRDefaultMemoryErrorRoutine(void* heap, u32 size, int alignment);