Don't show free blocks as leaked.
 [rsc] --rw-rw-r-- M 187561 glenda sys 5952 Sep 16 10:09 sys/src/cmd/aux/acidleak.c
	/n/sourcesdump/2005/0916/plan9/sys/src/cmd/aux/acidleak.c:271,277 - 
	/n/sourcesdump/2005/0917/plan9/sys/src/cmd/aux/acidleak.c:271,277
	  					else
	  						nhdr++;
	  				}
	- 				if(b->mark == 0)
	+ 				if(b->mark == 0 && !b->free)
	  					nleak++;
	  				nb++;
	  			}
 [sys] --rwxrwxr-x M 187561 glenda sys 69436 Sep 16 23:07 386/bin/aux/acidleak
	/sys/src/cmd/aux/acidleak.c:main

Add a couple SATA controllers.
 [jmk] --rw-rw-r-- M 187561 glenda sys 51396 Sep 16 17:26 sys/src/9/pc/sdata.c
	/n/sourcesdump/2005/0916/plan9/sys/src/9/pc/sdata.c:1868,1873 - 
	/n/sourcesdump/2005/0917/plan9/sys/src/9/pc/sdata.c:1868,1875
	  		case (0x4D69<<16)|0x105A:	/* Promise Ultra/133 TX2 */
	  		case (0x3373<<16)|0x105A:	/* Promise 20378 RAID */
	  		case (0x3149<<16)|0x1106:	/* VIA VT8237 SATA/RAID */
	+ 		case (0x3112<<16)|0x1095:   	/* SiL 3112 SATA (DMA busted?) */
	+ 		case (0x3114<<16)|0x1095:	/* SiL 3114 SATA/RAID */
	  			pi = 0x85;
	  			break;
	  		case (0x0004<<16)|0x1103:	/* HighPoint HPT366 */
 [jmk] --rw-rw-r-- M 187561 glenda sys 38224 Sep 16 17:26 sys/src/boot/pc/sdata.c
	/n/sourcesdump/2005/0916/plan9/sys/src/boot/pc/sdata.c:1465,1470 - 
	/n/sourcesdump/2005/0917/plan9/sys/src/boot/pc/sdata.c:1465,1472
	  		case (0x4D69<<16)|0x105A:	/* Promise Ultra/133 TX2 */
	  		case (0x3373<<16)|0x105A:	/* Promise 20378 RAID */
	  		case (0x3149<<16)|0x1106:	/* VIA VT8237 SATA/RAID */
	+ 		case (0x3112<<16)|0x1095:   	/* SiL 3112 SATA (DMA busted?) */
	+ 		case (0x3114<<16)|0x1095:	/* SiL 3114 SATA/RAID */
	  			pi = 0x85;
	  			break;
	  		case (0x0004<<16)|0x1103:	/* HighPoint HPT-370 */
 [jmk] --rwxrwxr-x M 187561 glenda sys 310558 Sep 16 23:09 386/9loaddebug
 [jmk] --rwxrwxr-x M 187561 glenda sys 198805 Sep 16 23:09 386/9loadlitedebug