This is avoid having supplementary directories at
SS_SERVICE_ADMDIR or SS_SERVICE_USERDIR mostly in case of crash of
module parse process. In that case, as the resolve file of the module is not
created yet, it cannot be found at remove time.

that is a part of a module

make exclusive -s and -c options.
use new environment function from oblibs.
less HEAP memory usage.

This reverts commit 87bd69c6.

in case of resolve file corruption.
Use of lexer functions.

Some distribution do not leave an empty live directory at exit of the initramfs.
In case of existing directory, the -m option remount the live directory excluding the MS_NOEXEC flag.