randomtest fixes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

testsuite/mount.tests

@@ -4,16 +4,19 @@
 
 . ./testing.sh
 
+test -f "$bindir/.config" && . "$bindir/.config"
+
 test "`id -u`" = 0 || {
-	echo "SKIPPED: must be root to test this"
+	echo "SKIPPED: mount (must be root to test this)"
 	exit 0
 }
 
-optional MKFS_MINIX
-if [ -n "$SKIP" ]
-then
-  echo "SKIPPED: mount"
-  exit 0
+if test x"$CONFIG_MKFS_MINIX" != x"y" \
+|| test x"$CONFIG_FEATURE_MINIX2" != x"y" \
+|| test x"$CONFIG_FEATURE_DEVFS" = x"y" \
+; then
+	echo "SKIPPED: mount"
+	exit 0
 fi
 
 testdir=$PWD/testdir