More -Wmissing-variable-declarations fixes.

In addition to adding `static' where possible:

- bin/date: Move `retval' into extern.h to make it visible to date.c.
- bin/ed: Move globally used variables into ed.h.
- sbin/camcontrol: Move `verbose' into camcontrol.h and fix shadow warnings.
- usr.bin/calendar: Remove unneeded variables.
- usr.bin/chat: Make `line' local instead of global.
- usr.bin/elfdump: Comment out unneeded function.
- usr.bin/rlogin: Use _Noreturn instead of __dead2.
- usr.bin/tset: Pull `Ospeed' into extern.h.
- usr.sbin/mfiutil: Put global variables in mfiutil.h.
- usr.sbin/pkg: Remove unused `os_corres'.
- usr.sbin/quotaon, usr.sbin/repquota: Remove unused `qfname'.

1 files changed, 2 insertions, 2 deletions

diff --git a/usr.bin/tftp/main.c b/usr.bin/tftp/main.c
index 669299b..c0f5088 100644
--- a/usr.bin/tftp/main.c
+++ b/usr.bin/tftp/main.c
@@ -80,7 +80,7 @@ __FBSDID("$FreeBSD$");
 typedef struct	sockaddr_storage peeraddr;
 static int	connected;
 static char	mode[32];
-jmp_buf		toplevel;
+static jmp_buf	toplevel;
 volatile int	txrx_error;
 static int	peer;
 
@@ -89,7 +89,7 @@ static int	margc;
 static char	*margv[MAX_MARGV];
 
 int		verbose;
-char		*port = NULL;
+static char	*port = NULL;
 
 static void	get(int, char **);
 static void	help(int, char **);