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.

Kernel/init.cpp

@@ -247,3 +247,17 @@ void init()
     }
 }
 
+void log_try_lock(const char* where)
+{
+    kprintf("[%u] >>> locking... (%s)\n", current->pid(), where);
+}
+
+void log_locked(const char* where)
+{
+    kprintf("[%u] >>> locked() in %s\n", current->pid(), where);
+}
+
+void log_unlocked(const char* where)
+{
+    kprintf("[%u] <<< unlocked()\n", current->pid(), where);
+}