Brought the Voodoo files in line with the mainline PCem code - fixes all warnings;

Applied all the mainline PCem commits;
Fixed some sound-related warnings.

src/mem.h

@@ -122,12 +122,12 @@ typedef struct page_t
         
         uint8_t *mem;
         
-        struct codeblock_t *block, *block_2;
+        struct codeblock_t *block[4], *block_2[4];
 
         /*Head of codeblock tree associated with this page*/
         struct codeblock_t *head;
         
-        uint64_t code_present_mask, dirty_mask;
+        uint64_t code_present_mask[4], dirty_mask[4];
 } page_t;
 
 extern page_t *pages;