put the stuff into the right "distribution". As default things end up
in "bindist".
Normal (ie: most) makefiles know naught of this.
More commits will follow, which will direct various parts of the tree
into the distribution we want them in.
Some of the grief of being release-engineer is supposed to go away with this.
if requested. LKMs which need it should use:
SRCS+= vnode_if.h
CLEANFILES+= vnode_if.h vnode_if.c
These rules were already present for VFS LKMs; now they are enabled all
the time. (VFS LKMs do not need the fragment above; it is still done for them.)