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

src/JSystem/JKernel/JKRFileLoader.cpp

@@ -4,8 +4,8 @@
 
 #define MSL_USE_INLINES 1  // needed to inline tolower call. not inlined elsewhere in the repo
 
-#include "string.h"
-#include "ctype.h"
+#include <string>
+#include <ctype>
 #include "global.h"
 
 JKRFileLoader* JKRFileLoader::sCurrentVolume;