Fix broken SpinLock.

The SpinLock was all backwards and didn't actually work. Fixing it exposed
how wrong most of the locking here is.

I need to come up with a better granularity here.

AK/test.cpp

@@ -11,13 +11,22 @@
 #include "WeakPtr.h"
 #include "CircularQueue.h"
 #include "FileSystemPath.h"
+#include "Lock.h"
 
 static void testWeakPtr();
 
+void log_locked() { }
+void log_unlocked() { }
+
 int main(int c, char** v)
 {
     StringImpl::initializeGlobals();
 
+    {
+        SpinLock lock;
+        Locker locker(lock);
+    }
+
     {
         const char* testpath = "/proc/../proc/1/../../proc/1/vm";
         if (c == 2)