MFC r274251:
Add DEV_MODULE_ORDERED().
MFC r273123:

Silence down a warning that doesn't provide any useful information unless
debug is enabled.

Sponsored by:	The FreeBSD Foundation
MFC r273107:

Make automount(8)/automountd(8) treat percent sign as a valid part
of path.  It's useful for spaces encoded as %20 as msdosfs labels.

Submitted by:	glebius@
MFC r272717:

Remove call to access(2) which didn't serve any purpose, and make it more
tolerant to errors.

Sponsored by:	The FreeBSD Foundation