portx64: changed pointers stored in u32 to uintptr_t

- adjusted hardcoded mask/hardcoded offsets used in memory operations (modelasm_c.c)
- makefile: enabled x64 support and added lib dependency
- title: increase alloc size
- tex: adjustment to calculations involving GDL sizes

src/include/game/title.h

@@ -4,7 +4,7 @@
 #include "data.h"
 #include "types.h"
 
-#define TITLE_ALLOCSIZE 1024 * 286
+#define TITLE_ALLOCSIZE 1024 * 332
 
 extern u32 var800624d4;
 extern u32 var800624d8;