extra underscores for _randomize and _swap

libsrc/common/_swap.s

@@ -1,15 +1,15 @@
 ;
 ; Ullrich von Bassewitz, 1998-12-09, 2004-11-30
 ;
-; void __fastcall__ _swap (void* p, void* q, size_t size);
+; void __fastcall__ __swap (void* p, void* q, size_t size);
 ;
 
-        .export         __swap
+        .export         ___swap
         .import         popax, popptr1
         .importzp       ptr1, ptr2, ptr3
 
 
-__swap: eor     #$FF
+___swap: eor     #$FF
         sta     ptr3
         txa
         eor     #$FF

libsrc/common/qsort.c

@@ -32,13 +32,13 @@ static void QuickSort (register unsigned char* Base, int Lo, int Hi,
                 J -= Size;
             }
             if (I <= J) {
-                _swap (Base + I, Base + J, Size);
+                __swap (Base + I, Base + J, Size);
                 I += Size;
                 J -= Size;
             }
         }
         if (J != Lo) {
-            _swap (Base + J, Base + Lo, Size);
+            __swap (Base + J, Base + Lo, Size);
         }
         if (((unsigned) J) * 2 > (Hi + Lo)) {
             QuickSort (Base, J + Size, Hi, Size, Compare);