selinux/*: -Wunused-parameter fixes
runsv: make it NOMMU-capable

function                                             old     new   delta
startservice                                         291     313     +22
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 1/0 up/down: 22/0)               Total: 22 bytes

diff --git a/selinux/chcon.c b/selinux/chcon.c
index f00e242..288e93a 100644
--- a/selinux/chcon.c
+++ b/selinux/chcon.c
@@ -28,7 +28,11 @@
 static char *range = NULL;
 static char *specified_context = NULL;
 
-static int change_filedir_context(const char *fname, struct stat *stbuf, void *userData, int depth)
+static int change_filedir_context(
+		const char *fname,
+		struct stat *stbuf ATTRIBUTE_UNUSED,
+		void *userData ATTRIBUTE_UNUSED,
+		int depth ATTRIBUTE_UNUSED)
 {
 	context_t context = NULL;
 	security_context_t file_context = NULL;
@@ -121,7 +125,7 @@
 #endif
 
 int chcon_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chcon_main(int argc, char **argv)
+int chcon_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *reference_file;
 	char *fname;