drop <minix/termios.h>, use clean <sys/termios.h>

. also implement some netbsd-style tty ioctls
	. also implement SIGINFO
	. also import netbsd stty
	. rename keymap minix CMIN (for ctrl+minus on numeric keypad)
	  to CNMIN; to keep unchanged control character default CMIN in
	  new <sys/ttydefaults.h>
	. convert CS[5678] logic in rs232 driver to explicit setting of LC
	  bits

Change-Id: I9b7d2963fe9aec00fb6e7535ef565b3191fc1c1d

lib/libc/termios/tcflow.c

@@ -53,10 +53,6 @@ __weak_alias(tcflow,_tcflow)
 int
 tcflow(int fd, int action)
 {
-#ifdef __minix
-	_DIAGASSERT(fd != -1);
-	return ioctl(fd, TCFLOW, &action);
-#else /* !__minix */
 	struct termios term;
 	u_char c;
 
@@ -80,5 +76,4 @@ tcflow(int fd, int action)
 		return (-1);
 	}
 	/* NOTREACHED */
-#endif /* !__minix */
 }

lib/libc/termios/tcflush.c

@@ -53,10 +53,6 @@ __weak_alias(tcflush,_tcflush)
 int
 tcflush(int fd, int which)
 {
-#ifdef __minix
-	_DIAGASSERT(fd != -1);
-	return ioctl(fd, TCFLSH, &which);
-#else /* !__minix */
 	int com;
 
 	_DIAGASSERT(fd != -1);
@@ -76,5 +72,4 @@ tcflush(int fd, int which)
 		return (-1);
 	}
 	return (ioctl(fd, TIOCFLUSH, &com));
-#endif /* !__minix */
 }

lib/libc/termios/tcsendbreak.c

@@ -40,10 +40,11 @@ __RCSID("$NetBSD: tcsendbreak.c,v 1.10 2012/06/25 22:32:46 abs Exp $");
 
 #include "namespace.h"
 #include <sys/types.h>
-#include <sys/ioctl.h>
-#ifndef __minix
+#ifdef __minix
 #include <sys/time.h>
-#endif /* !__minix */
+#endif
+#include <sys/types.h>
+#include <sys/ioctl.h>
 
 #include <assert.h>
 #include <errno.h>
@@ -58,10 +59,6 @@ __weak_alias(tcsendbreak,_tcsendbreak)
 int
 tcsendbreak(int fd, int len)
 {
-#ifdef __minix
-	_DIAGASSERT(fd != -1);
-	return ioctl(fd, TCSBRK, &len);
-#else /* !__minix */
 	static const struct timespec sleepytime = { 0, 400000000 };
 
 	_DIAGASSERT(fd != -1);
@@ -72,5 +69,4 @@ tcsendbreak(int fd, int len)
 	if (ioctl(fd, TIOCCBRK, 0) == -1)
 		return (-1);
 	return (0);
-#endif /* !__minix */
 }

lib/libc/termios/tcsetattr.c

@@ -53,22 +53,16 @@ __weak_alias(tcsetattr,_tcsetattr)
 int
 tcsetattr(int fd, int opt, const struct termios *t)
 {
-#ifndef __minix
 	struct termios localterm;
-#endif
 
 	_DIAGASSERT(fd != -1);
 	_DIAGASSERT(t != NULL);
 
-#ifndef __minix
 	if (opt & TCSASOFT) {
 		localterm = *t;
 		localterm.c_cflag |= CIGNORE;
 		t = &localterm;
 	}
-#else /* __minix */
-#define	TCSASOFT	0 
-#endif /* __minix */
 	switch (opt & ~TCSASOFT) {
 	case TCSANOW:
 		return (ioctl(fd, TIOCSETA, __UNCONST(t)));