*: add -Wunused-parameter; fix resulting breakage

function                                             old     new   delta
procps_scan                                         1265    1298     +33
aliascmd                                             278     283      +5
parse_file_cmd                                       116     120      +4
dname_enc                                            373     377      +4
setcmd                                                90      93      +3
execcmd                                               57      60      +3
count_lines                                           72      74      +2
process_command_subs                                 340     339      -1
test_main                                            409     407      -2
mknod_main                                           179     177      -2
handle_incoming_and_exit                            2653    2651      -2
argstr                                              1312    1310      -2
shiftcmd                                             131     128      -3
exitcmd                                               46      43      -3
dotcmd                                               297     294      -3
breakcmd                                              86      83      -3
evalpipe                                             353     349      -4
evalcommand                                         1180    1176      -4
evalcmd                                              109     105      -4
send_tree                                            374     369      -5
mkfifo_main                                           82      77      -5
evalsubshell                                         152     147      -5
typecmd                                               75      69      -6
letcmd                                                61      55      -6
add_cmd                                             1190    1183      -7
main                                                 891     883      -8
ash_main                                            1415    1407      -8
parse_stream                                        1377    1367     -10
alloc_procps_scan                                     55       -     -55
------------------------------------------------------------------------------
(add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148)          Total: -94 bytes
   text    data     bss     dec     hex filename
 797195     658    7428  805281   c49a1 busybox_old
 797101     658    7428  805187   c4943 busybox_unstripped

diff --git a/console-tools/clear.c b/console-tools/clear.c
index 769ce31..0d94e35 100644
--- a/console-tools/clear.c
+++ b/console-tools/clear.c
@@ -13,7 +13,7 @@
 #include "libbb.h"
 
 int clear_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int clear_main(int argc, char **argv)
+int clear_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	return printf("\033[H\033[J") != 6;
 }
diff --git a/console-tools/loadfont.c b/console-tools/loadfont.c
index 882b881..843f4b0 100644
--- a/console-tools/loadfont.c
+++ b/console-tools/loadfont.c
@@ -167,7 +167,7 @@
 }
 
 int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int loadfont_main(int argc, char **argv)
+int loadfont_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
 	int fd;
 
diff --git a/console-tools/loadkmap.c b/console-tools/loadkmap.c
index 40885ee..bea5a77 100644
--- a/console-tools/loadkmap.c
+++ b/console-tools/loadkmap.c
@@ -26,7 +26,7 @@
 #define MAX_NR_KEYMAPS  256
 
 int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int loadkmap_main(int argc, char **argv)
+int loadkmap_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
 	struct kbentry ke;
 	int i, j, fd;
diff --git a/console-tools/reset.c b/console-tools/reset.c
index bc18cd0..f36ef54 100644
--- a/console-tools/reset.c
+++ b/console-tools/reset.c
@@ -18,7 +18,7 @@
 #endif
 
 int reset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int reset_main(int argc, char **argv)
+int reset_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	static const char *const args[] = {
 		"stty", "sane", NULL
diff --git a/console-tools/resize.c b/console-tools/resize.c
index 7f72b9a..01b1442 100644
--- a/console-tools/resize.c
+++ b/console-tools/resize.c
@@ -21,10 +21,10 @@
 }
 
 int resize_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int resize_main(int argc, char **argv)
+int resize_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	struct termios new;
-	struct winsize w = { 0,0,0,0 };
+	struct winsize w = { 0, 0, 0, 0 };
 	int ret;
 
 	/* We use _stderr_ in order to make resize usable