introduce bb_putchar(). saves ~1800 on uclibc (less on glibc).

selinux/getsebool.c

@@ -53,7 +53,7 @@ int getsebool_main(int argc, char **argv)
 		printf("%s --> %s", names[i], (active ? "on" : "off"));
 		if (pending != active)
 			printf(" pending: %s", (pending ? "on" : "off"));
-		putchar('\n');
+		bb_putchar('\n');
 	}
 
 	if (ENABLE_FEATURE_CLEAN_UP) {

selinux/setfiles.c

@@ -284,8 +284,8 @@ static int restore(const char *file)
 		if (count % 0x400 == 0) { /* every 1024 times */
 			count = (count % (80*0x400));
 			if (count == 0)
-				fputc('\n', stdout);
-			fputc('*', stdout);
+				bb_putchar('\n');
+			bb_putchar('*');
 			fflush(stdout);
 		}
 	}