Added the preliminary ASSERT() macro from NewOS.

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@310 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/debug.h

@@ -30,4 +30,11 @@ int  remove_debugger_command(const char * name, int (*func)(int, char **));
 
 extern void dbg_save_registers(int *);	/* arch provided */
 
+#if DEBUG 
+#	define ASSERT(x) \ 
+	{ if (!(x)) panic("ASSERT FAILED (%s:%d): %s", __FILE__, __LINE__, #x); } 
+#else 
+#	define ASSERT(x) 
 #endif
+
+#endif	/* _KERNEL_DEBUG_H */