Drawterm updates.
 [rsc] --rw-rw-r-- M 661128 rsc drawterm 54659 Jan 17 07:50 sys/src/cmd/unix/drawterm/libmemdraw/draw.c
	/n/sourcesdump/2006/0117/plan9/sys/src/cmd/unix/drawterm/libmemdraw/draw.c:55,61 - 
	/n/sources/plan9/sys/src/cmd/unix/drawterm/libmemdraw/draw.c:55,60
	  
	  	fmtinstall('R', Rfmt); 
	  	fmtinstall('P', Pfmt);
	- 	fmtinstall('b', _ifmt);
	  
	  	memones = allocmemimage(Rect(0,0,1,1), GREY1);
	  	memones->flags |= Frepl;
 [rsc] --rw-rw-r-- M 661128 rsc drawterm 2414 Jan 17 07:50 sys/src/cmd/unix/drawterm/main.c
	/n/sourcesdump/2006/0117/plan9/sys/src/cmd/unix/drawterm/main.c:36,42 - 
	/n/sources/plan9/sys/src/cmd/unix/drawterm/main.c:36,41
	  		eve = "drawterm";
	  
	  	sizebug();
	- 	fmtinstall('r', errfmt);
	  
	  	osinit();
	  	procinit0();

	/n/sourcesdump/2006/0117/plan9/sys/src/cmd/unix/drawterm/main.c:36,42 - 
	/n/sources/plan9/sys/src/cmd/unix/drawterm/main.c:36,41
	  		eve = "drawterm";
	  
	  	sizebug();
	- 	fmtinstall('r', errfmt);
	  
	  	osinit();
	  	procinit0();