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.

du.c

@@ -1,7 +1,6 @@
 /* See LICENSE file for copyright and license details. */
 #include <dirent.h>
 #include <limits.h>
-#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -16,11 +15,11 @@ static char file[PATH_MAX];
 static long depth = -1;
 static long curdepth = 0;
 
-static bool aflag = false;
-static bool dflag = false;
-static bool sflag = false;
-static bool kflag = false;
-static bool hflag = false;
+static int aflag = 0;
+static int dflag = 0;
+static int sflag = 0;
+static int kflag = 0;
+static int hflag = 0;
 
 static long du(const char *);
 static void print(long n, char *path);
@@ -50,20 +49,20 @@ main(int argc, char *argv[])
 
 	ARGBEGIN {
 	case 'a':
-		aflag = true;
+		aflag = 1;
 		break;
 	case 'd':
-		dflag = true;
+		dflag = 1;
 		depth = estrtol(EARGF(usage()), 0);
 		break;
 	case 's':
-		sflag = true;
+		sflag = 1;
 		break;
 	case 'k':
-		kflag = true;
+		kflag = 1;
 		break;
 	case 'h':
-		hflag = true;
+		hflag = 1;
 		break;
 	default:
 		usage();