Move all suckless stuff to unused.

_unused/_suckless/slock/explicit_bzero.c

@@ -0,0 +1,19 @@
+/*	$OpenBSD: explicit_bzero.c,v 1.3 2014/06/21 02:34:26 matthew Exp $ */
+/*
+ * Public domain.
+ * Written by Matthew Dempsky.
+ */
+
+#include <string.h>
+
+  __attribute__((weak)) void
+__explicit_bzero_hook(void *buf, size_t len)
+{
+}
+
+  void
+explicit_bzero(void *buf, size_t len)
+{
+  memset(buf, 0, len);
+  __explicit_bzero_hook(buf, len);
+}