Get rid of in-line assembly in idiv16().

This cannot work with MinGW -masm=intel, only -masm=att.

Source/Glide64/DepthBufferRender.cpp

@@ -97,31 +97,7 @@ __inline int imul14(int x, int y)        // (x * y) >> 14
 
 __inline int idiv16(int x, int y)        // (x << 16) / y
 {
-    //x = (((long long)x) << 16) / ((long long)y);
- /*   
-  eax = x;
-  ebx = y;
-  edx = x;
-  (x << 16) | ()
-   */ 
-#if !defined(__GNUC__) && !defined(NO_ASM)
-  __asm {
-        mov   eax, x
-        mov   ebx, y
-        mov   edx,eax   
-        sar   edx,16
-        shl   eax,16    
-        idiv  ebx  
-        mov   x, eax
-    }
-#elif !defined(NO_ASM)
-    int reminder;
-    asm ("idivl %[divisor]"
-          : "=a" (x), "=d" (reminder)
-          : [divisor] "g" (y), "d" (x >> 16), "a" (x << 16));
-#else
-	x = (((long long)x) << 16) / ((long long)y);
-#endif
+    x = ((int64_t)x << 16) / (int64_t)y;
     return x;
 }