syscalls/umask01: Cleanup && Use the new API && Rename

Cleanup umask03 and convert it to new API, then remove
umask01 and umask02, rename the new umask03 to umask01.

Signed-off-by: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
7 files changed