finaly implemented macros properly

examples/rule110.mcl

@@ -1,25 +1,30 @@
-mem 98 + 1 @8
 
-0 while dup 98 < do
-   0 while dup 100 < do
+macro puts 1 1 syscall3 drop end
+
+macro BOARD_SIZE 100 end
+
+mem BOARD_SIZE 2 - + 1 @8
+
+0 while dup BOARD_SIZE 2 - < do
+   0 while dup BOARD_SIZE < do
       dup mem + !8 if
-         dup mem + 100 + 42 @8
+         dup mem + BOARD_SIZE + 42 @8
       else
-         dup mem + 100 + 32 @8 
+         dup mem + BOARD_SIZE + 32 @8 
       end
       1 +
    end
    
-   mem + 100 + 10 @8
+   mem + BOARD_SIZE + 10 @8
 
-   101 mem 100 + 1 1 syscall3 drop
+   BOARD_SIZE 1 + mem BOARD_SIZE + puts
 
    // pattern
    mem     !8 1 shl
    mem 1 + !8
    bor
 
-   1 while dup 98 < do
+   1 while dup BOARD_SIZE 2 - < do
       swap 1 shl 7 band
       over mem + 1 + !8 bor
       2dup 110 swap shr 1 band