K 10
svn:author
V 7
delphij
K 8
svn:date
V 27
2010-10-21T20:31:50.983077Z
K 7
svn:log
V 263
Call chainevh callback when we are invoked with neither MOD_LOAD nor
MOD_UNLOAD.  This makes it possible to add custom hooks for other module
events.

Return EOPNOTSUPP when there is no callback available.

Pointed out by:	jhb
Reviewed by:	jhb
MFC after:	1 month

END