separate xfer method.

Add missing .alloc_iob entries to several xfer_interface_operations
structures.

which respond to close with a reopen() (e.g. iSCSI).

xfer_window() function, which can return a scalar rather than a
boolean.

around which still hold pointers to variables belonging to our parent...

names.

Add "dev" pointer in struct net_device to tie network interfaces back to a
hardware device.

Force natural alignment of data types in __table() macros.  This seems to
prevent gcc from taking the unilateral decision to occasionally increase
their alignment (which screws up the table packing).

defined in vsprintf.h.  (This may change, since vsprintf.h is a
non-standard name, but for now it's the one to use.)

There should be no need to include vsprintf.h just for DBG() statements,
since include/compiler.h forces it in for a debug build anyway.