[Midnightbsd-cvs] src: mbuf.h: add m_collapse and friends

[laffer1 at midnightbsd.org]

Log Message:
-----------
add m_collapse and friends

Modified Files:
--------------
    src/sys/sys:
        mbuf.h (r1.5 -> r1.6)
        (http://cvsweb.midnightbsd.org/src/sys/sys/mbuf.h?r1=1.5&r2=1.6)