Un-boolify sbase

It actually makes the binaries smaller, the code easier to read
(gems like "val == true", "val == false" are gone) and actually
predictable in the sense of that we actually know what we're
working with (one bitwise operator was quite adventurous and
should now be fixed).

This is also more consistent with the other suckless projects
around which don't use boolean types.

sort.c

@@ -1,6 +1,5 @@
 /* See LICENSE file for copyright and license details. */
 #include <ctype.h>
-#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -41,7 +40,7 @@ static int parse_keydef(struct keydef *, char *, int);
 static char *nextcol(char *);
 static char *columns(char *, const struct keydef *);
 
-static bool uflag = false;
+static int uflag = 0;
 static char *fieldsep = NULL;
 
 static void
@@ -77,7 +76,7 @@ main(int argc, char *argv[])
 			usage();
 		break;
 	case 'u':
-		uflag = true;
+		uflag = 1;
 		break;
 	default:
 		usage();