Added umount() tests, but commented them out due to block device requirement.
diff --git a/runtest/syscalls b/runtest/syscalls
index b73872d..002e206 100644
--- a/runtest/syscalls
+++ b/runtest/syscalls
@@ -690,6 +690,16 @@
unlink07 unlink07
unlink08 unlink08
+#
+# These tests require an unmounted block device
+# to run correctly. Please see individual test
+# code for more information.
+#
+#umount01 umount01 -D /dev/...
+#umount02 umount02 -D /dev/...
+#umount03 umount03 -D /dev/...
+#umount04 umount04 -D /dev/...
+
utime01 utime01
utime01A symlink01 -T utime01
utime02 utime02