[Midnightbsd-cvs] src: fs/unionfs: Fix several issues with unionfs including access via

[laffer1 at midnightbsd.org]

Log Message:
-----------
Fix several issues with unionfs including access via threads, including devfs and and sockets on a md with a unionfs mount.

Modified Files:
--------------
    src/sys/fs/unionfs:
        union.h (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/fs/unionfs/union.h?r1=1.3&r2=1.4)
        union_subr.c (r1.4 -> r1.5)
        (http://cvsweb.midnightbsd.org/src/sys/fs/unionfs/union_subr.c?r1=1.4&r2=1.5)
        union_vfsops.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/fs/unionfs/union_vfsops.c?r1=1.3&r2=1.4)
        union_vnops.c (r1.3 -> r1.4)
        (http://cvsweb.midnightbsd.org/src/sys/fs/unionfs/union_vnops.c?r1=1.3&r2=1.4)