Addition of an arbitary bitmask handling set of functions

New memory deallocation routines for the DCBS

include/thread.h

@@ -19,10 +19,19 @@
  */
 #include <pthread.h>
 
+/**
+ * @file thread.h	The gateway threading interface
+ *
+ * An encapsulation of the threading used by the gateway. This is designed to
+ * isolate the majority of the gateway code from th epthread library, enabling
+ * the gateway to be ported to a different threading package with the minimum
+ * of changes.
+ */
+
 #define THREAD		pthread_t
 #define THREAD_SHELF	pthread_self
 
-extern void 	*thread_start(void (*entry)());
+extern void 	*thread_start(void (*entry)(void *), void *arg);
 extern void	thread_wait(void *thd);
 
 #endif