Moved tweak support to USER dll. Removed tweak.h and cache.h.

diff --git a/controls/static.c b/controls/static.c
index a5b1ca1..fa127b6 100644
--- a/controls/static.c
+++ b/controls/static.c
@@ -12,8 +12,8 @@
 #include "cursoricon.h"
 #include "controls.h"
 #include "heap.h"
+#include "user.h"
 #include "debugtools.h"
-#include "tweak.h"
 
 DEFAULT_DEBUG_CHANNEL(static);