K 10 svn:author V 2 np K 8 svn:date V 27 2013-08-29T23:46:38.955215Z K 7 svn:log V 261 Add a routine for attaching an mbuf to a buffer with an external refcount. This one is willing to work with buffers that may already be referenced. MEXTADD/m_extadd are suitable only for the first attachment to a cluster -- they initialize the refcount to 1. END