Add SDL_{MAX,MIN}_{S,U}INT{8,16,32} consts

Author: suve

units/sdlstdinc.inc

@@ -13,6 +13,24 @@ const
   SDL_FALSE = TSDL_Bool(0);
   SDL_TRUE  = TSDL_Bool(1);
 
+  SDL_MAX_SINT8 = High(cint8);
+  SDL_MIN_SINT8 = Low(cint8);
+
+  SDL_MAX_UINT8 = High(cuint8);
+  SDL_MIN_UINT8 = Low(cuint8);
+
+  SDL_MAX_SINT16 = High(cint16);
+  SDL_MIN_SINT16 = Low(cint16);
+
+  SDL_MAX_UINT16 = High(cuint16);
+  SDL_MIN_UINT16 = Low(cuint16);
+
+  SDL_MAX_SINT32 = High(cint32);
+  SDL_MIN_SINT32 = Low(cint32);
+
+  SDL_MAX_UINT32 = High(cuint32);
+  SDL_MIN_UINT32 = Low(cuint32);
+
   SDL_FLT_EPSILON = cfloat(1.1920928955078125e-07);
 
 type