[Midnightbsd-cvs] src: geom/bde: bring in several improvements from freebsd 9 stable

[laffer1 at midnightbsd.org]

Log Message:
-----------
bring in several improvements from freebsd 9 stable

Modified Files:
--------------
    src/sys/geom/concat:
        g_concat.c (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/geom/concat/g_concat.c?r1=1.5&r2=1.6)
    src/sys/geom/cache:
        g_cache.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/geom/cache/g_cache.c?r1=1.2&r2=1.3)
        g_cache.h (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/geom/cache/g_cache.h?r1=1.2&r2=1.3)
    src/sys/geom/bde:
        g_bde.c (r1.2 -> r1.3)
        (http://cvsweb.midnightbsd.org/src/sys/geom/bde/g_bde.c?r1=1.2&r2=1.3)
        g_bde_work.c (r1.4 -> r1.5)
        (http://cvsweb.midnightbsd.org/src/sys/geom/bde/g_bde_work.c?r1=1.4&r2=1.5)