64-bit fixes.
 [jmk] --rw-rw-r-- M 1146153 glenda sys 6076 Dec 30 00:45 sys/src/cmd/lex/lmain.c
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/lmain.c:137,143 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/lmain.c:137,143
	  	gch();
	  		/* may be gotten: def, subs, sname, stchar, ccl, dchar */
	  	get1core();
	- 		/* may be gotten: name, left, right, nullstr, parent */
	+ 		/* may be gotten: name, left, right, nullstr, parent, ptr */
	  	strcpy((char*)sp, "INITIAL");
	  	sname[0] = sp;
	  	sp += strlen("INITIAL") + 1;
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/lmain.c:246,251 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/lmain.c:246,252
	  	free(right);
	  	free(parent);
	  	free(nullstr);
	+ 	free(ptr);
	  	free(state);
	  	free(sname);
	  	free(stchar);
 [jmk] --rw-rw-r-- M 1146153 glenda sys 10121 Dec 30 00:45 sys/src/cmd/lex/sub1.c
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/sub1.c:345,351 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/sub1.c:345,351
	  		if(strlen(p) == 0) nullstr[tptr] = TRUE;
	  		break;
	  	default:
	- 		warning("bad switch mnp %d %P", a, p);
	+ 		error("bad switch mnp %d %P", a, p);
	  		break;
	  	}
	  	if(tptr > treesize)
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/sub1.c:440,446 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/sub1.c:440,448
	  	switch(i){
	  	case RNULLS:
	  		return(mn0(i));
	- 	case RCCL: case RNCCL: case FINAL: case S1FINAL: case S2FINAL:
	+ 	case RCCL: case RNCCL:
	+ 		return(mnp(i,ptr[n]));
	+ 	case FINAL: case S1FINAL: case S2FINAL:
	  		return(mn1(i,left[n]));
	  	case STAR: case QUEST: case PLUS: case CARAT:
	  		return(mn1(i,dupl(left[n])));
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/sub1.c:550,560 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/sub1.c:552,562
	  				break;
	  			case RCCL:
	  				print("ccl ");
	- 				allprint(left[t]);
	+ 				allprint(ptr[t]);
	  				break;
	  			case RNCCL:
	  				print("nccl ");
	- 				allprint(left[t]);
	+ 				allprint(ptr[t]);
	  				break;
	  			case DIV:
	  				print("/ %d %d",left[t],right[t]);
 [jmk] --rw-rw-r-- M 1146153 glenda sys 17089 Dec 30 00:45 sys/src/cmd/lex/sub2.c
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/sub2.c:238,244 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/sub2.c:238,244
	  			else switch(name[curpos]){
	  			case RCCL:
	  				tryit = TRUE;
	- 				q = (uchar *)left[curpos];
	+ 				q = ptr[curpos];
	  				while(*q){
	  					for(j=1;j<NCH;j++)
	  						if(cindex[j] == *q)
	/n/sourcesdump/2005/1230/plan9/sys/src/cmd/lex/sub2.c:323,329 - 
	/n/sourcesdump/2005/1231/plan9/sys/src/cmd/lex/sub2.c:323,329
	  		j = name[curpos];
	  		if(j < NCH && j == c
	  		|| j == RSTR && c == right[curpos]
	- 		|| j == RCCL && member(c, (uchar *)left[curpos])){
	+ 		|| j == RCCL && member(c, ptr[curpos])){
	  			f = foll[curpos];
	  			number = *f;
	  			newpos = f+1;