suppress warnings about easch <applet>_main() having

no preceding prototype

console-tools/chvt.c

@@ -15,6 +15,7 @@ enum {
 	VT_WAITACTIVE = 0x5607  /* wait for vt active */
 };
 
+int chvt_main(int argc, char **argv);
 int chvt_main(int argc, char **argv)
 {
 	int fd, num;

console-tools/clear.c

@@ -15,6 +15,7 @@
 #include "busybox.h"
 
 
+int clear_main(int argc, char **argv);
 int clear_main(int argc, char **argv)
 {
 	return printf("\033[H\033[J") != 6;

console-tools/deallocvt.c

@@ -15,6 +15,7 @@
 /* From <linux/vt.h> */
 enum { VT_DISALLOCATE = 0x5608 }; /* free memory associated to vt */
 
+int deallocvt_main(int argc, char *argv[]);
 int deallocvt_main(int argc, char *argv[])
 {
 	/* num = 0 deallocate all unused consoles */

console-tools/dumpkmap.c

@@ -22,18 +22,19 @@ struct kbentry {
 #define NR_KEYS 128
 #define MAX_NR_KEYMAPS 256
 
+int dumpkmap_main(int argc, char **argv);
 int dumpkmap_main(int argc, char **argv)
 {
 	struct kbentry ke;
 	int i, j, fd;
-	char flags[MAX_NR_KEYMAPS], magic[] = "bkeymap";
+	char flags[MAX_NR_KEYMAPS];
 
-	if (argc >= 2 && *argv[1] == '-')
+	if (argc >= 2 && argv[1][0] == '-')
 		bb_show_usage();
 
 	fd = xopen(CURRENT_VC, O_RDWR);
 
-	write(1, magic, 7);
+	write(1, "bkeymap", 7);
 
 	/* Here we want to set everything to 0 except for indexes:
 	 * [0-2] [4-6] [8-10] [12] */

console-tools/loadfont.c

@@ -30,6 +30,7 @@ struct psf_header {
 
 static void loadnewfont(int fd);
 
+int loadfont_main(int argc, char **argv);
 int loadfont_main(int argc, char **argv)
 {
 	int fd;

console-tools/loadkmap.c

@@ -25,6 +25,7 @@ struct kbentry {
 #define NR_KEYS         128
 #define MAX_NR_KEYMAPS  256
 
+int loadkmap_main(int argc, char **argv);
 int loadkmap_main(int argc, char **argv)
 {
 	struct kbentry ke;

console-tools/openvt.c

@@ -12,6 +12,7 @@
 
 #include "busybox.h"
 
+int openvt_main(int argc, char **argv);
 int openvt_main(int argc, char **argv)
 {
 	int fd;

console-tools/reset.c

@@ -15,6 +15,7 @@
 #include <unistd.h>
 #include "busybox.h"
 
+int reset_main(int argc, char **argv);
 int reset_main(int argc, char **argv)
 {
 	if (isatty(1)) {

console-tools/resize.c

@@ -9,6 +9,7 @@
 /* no options, no getopt */
 #include "busybox.h"
 
+int resize_main(int argc, char **argv);
 int resize_main(int argc, char **argv)
 {
 	struct termios old, new;

console-tools/setconsole.c

@@ -18,6 +18,7 @@ static const struct option setconsole_long_options[] = {
 
 #define OPT_SETCONS_RESET 1
 
+int setconsole_main(int argc, char **argv);
 int setconsole_main(int argc, char **argv)
 {
 	unsigned long flags;

console-tools/setkeycodes.c

@@ -9,9 +9,6 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
 #include <sys/ioctl.h>
 #include "busybox.h"
 
@@ -24,8 +21,8 @@ enum {
 	KDSETKEYCODE = 0x4B4D  /* write kernel keycode table entry */
 };
 
-extern int
-setkeycodes_main(int argc, char** argv)
+int setkeycodes_main(int argc, char** argv);
+int setkeycodes_main(int argc, char** argv)
 {
 	int fd, sc;
 	struct kbkeycode a;