K 10
svn:author
V 5
andre
K 8
svn:date
V 27
2007-01-22T14:50:28.000000Z
K 7
svn:log
V 327
Unbreak writes of 0 bytes.  Zero byte writes happen when only ancillary
control data but no payload data is passed.

Change m_uiotombuf() to return at least one empty mbuf if the requested
length was zero.  Add comment to sosend_dgram and sosend_generic().

Diagnoses by:		jhb
Regression test by:	rwatson
Pointy hat to.		andre

END