awk: fix printf("%c", 0) and the utf() function.
 [rsc] --rw-rw-r-- M 357477 glenda sys 12346 Mar 10 10:41 sys/src/cmd/awk/lex.c
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/awk/lex.c:86,93 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/awk/lex.c:86,93
	  	{ "system",	FSYSTEM,	BLTIN },
	  	{ "tolower",	FTOLOWER,	BLTIN },
	  	{ "toupper",	FTOUPPER,	BLTIN },
	- 	{ "while",	WHILE,		WHILE },
	  	{ "utf",	FUTF,		BLTIN },
	+ 	{ "while",	WHILE,		WHILE },
	  };
	  
	  #define DEBUG
 [rsc] --rw-rw-r-- M 357477 glenda sys 42795 Mar 10 11:44 sys/src/cmd/awk/run.c
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/awk/run.c:903,910 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/awk/run.c:903,912
	  			if (isnum(x)) {
	  				if (getfval(x))
	  					sprintf(p, fmt, (int) getfval(x));
	- 				else
	+ 				else{
	  					*p++ = '\0';
	+ 					*p = '\0';
	+ 				}
	  			} else
	  				sprintf(p, fmt, getsval(x)[0]);
	  			break;

rio: keep bottom'ed windows in order
 [rsc] --rw-rw-r-- M 357477 glenda sys 6169 Mar 10 13:32 sys/src/cmd/rio/data.c
 [rsc] --rw-rw-r-- M 357477 glenda sys 22807 Mar 10 13:32 sys/src/cmd/rio/rio.c
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/rio/rio.c:517,523 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/rio/rio.c:517,523
	  					scrolling = mouse->buttons;
	  				else
	  					scrolling = mouse->buttons && ptinrect(xy, winput->scrollr);
	- 				/* topped will be zero if window has been bottomed */
	+ 				/* topped will be zero or less if window has been bottomed */
	  				if(sending == FALSE && !scrolling && winborder(winput, mouse->xy) && winput->topped>0){
	  					moving = TRUE;
	  				}else if(inside && (scrolling || winput->mouseopen || (mouse->buttons&1)))
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/rio/rio.c:566,572 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/rio/rio.c:566,572
	  				cornercursor(w, mouse->xy, 0);
	  			/* we're not sending the event, but if button is down maybe we should */
	  			if(mouse->buttons){
	- 				/* w->topped will be zero if window has been bottomed */
	+ 				/* w->topped will be zero or less if window has been bottomed */
	  				if(w==nil || (w==winput && w->topped>0)){
	  					if(mouse->buttons & 1){
	  						;
 [rsc] --rw-rw-r-- M 357477 glenda sys 33362 Mar 10 13:32 sys/src/cmd/rio/wind.c
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/rio/wind.c:1268,1274 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/rio/wind.c:1268,1274
	  	if(w!=nil && w->i!=nil && !w->deleted){
	  		bottomwindow(w->i);
	  		flushimage(display, 1);
	- 		w->topped = 0;
	+ 		w->topped = - ++topped;
	  	}
	  }
	  

aux/ga: add CL-GD5480
 [jmk] --rw-rw-r-- M 357477 glenda sys 28743 Mar 10 14:10 lib/vgadb
	/n/sourcesdump/2006/0310/plan9/lib/vgadb:192,197 - 
	/n/sourcesdump/2006/0311/plan9/lib/vgadb:192,198
	  	0xE0039="CL-GD540x/542x VGA BIOS"		# NCR 3230
	  	0xC0039="CL-GD543x"
	  	0xC0039="CL-GD5440"
	+ 	0xC0039="CL-GD5480"				# Intel L440GX+
	  	0xC003B="SpeedStar PRO"				# Diamond SpeedStar Pro
	  	0xC0038="SpeedStar 64"				# Diamond SpeedStar 64
	  	0xC00F4="KELVIN 64"				# Orchid Kelvin 64
 [jmk] --rw-rw-r-- M 357477 glenda sys 4810 Mar 10 14:10 sys/src/9/pc/vgaclgd542x.c
	/n/sourcesdump/2006/0310/plan9/sys/src/9/pc/vgaclgd542x.c:119,124 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/9/pc/vgaclgd542x.c:119,136
	  			mem++;
	  		break;
	  
	+ 	case 0xBC:				/* CL-GD5480 */
	+ 		mem = 2;			/* 1024 = 256<<2 */
	+ 		x = vgaxi(Seqx, 0x0F);
	+ 		if((x & 0x18) == 0x18){
	+ 			mem <<= 1;		/* 2048 = 256<<3 */
	+ 			if(x & 0x80)
	+ 				mem <<= 2;	/* 2048 = 256<<4 */
	+ 		}
	+ 		if(vgaxi(Seqx, 0x17) & 0x80)
	+ 			mem <<= 1;
	+ 		break;
	+ 
	  	default:				/* uh, ah dunno */
	  		break;
	  	}
 [jmk] --rw-rw-r-- M 357477 glenda sys 7249 Mar 10 14:11 sys/src/cmd/aux/vga/clgd542x.c
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/aux/vga/clgd542x.c:29,34 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/aux/vga/clgd542x.c:29,35
	  
	  	{ 0xAC, 135000000, },		/* CL-GD5436 */
	  	{ 0xB8, 135000000, },		/* CL-GD5446 */
	+ 	{ 0xBC, 135000000, },		/* CL-GD5480 */
	  
	  	{ 0x30,  80000000, },		/* CL-GD7543 */
	  
	/n/sourcesdump/2006/0310/plan9/sys/src/cmd/aux/vga/clgd542x.c:127,132 - 
	/n/sourcesdump/2006/0311/plan9/sys/src/cmd/aux/vga/clgd542x.c:128,144
	  		 */
	  		if(((vga->sequencer[0x17]>>3) & 0x07) == 0x04)
	  			ctlr->flag |= Hlinear;
	+ 		break;
	+ 	case 0xBC:				/* CL-GD5480 */
	+ 		i = 2;				/* 1024 = 256<<2 */
	+ 		if((vga->sequencer[0x0F] & 0x18) == 0x18){
	+ 			i <<= 1;		/* 2048 = 256<<3 */
	+ 			if(vga->sequencer[0x0F] & 0x80)
	+ 				i <<= 2;	/* 2048 = 256<<4 */
	+ 		}
	+ 		if(vga->sequencer[0x17] & 0x80)
	+ 			i <<= 1;
	+ 		ctlr->flag |= Hlinear;
	  		break;
	  
	  	default:				/* uh, ah dunno */