Don't install a ru_SU.KOI8-R symlink, 'make delete-old' will just remove
it again.
Correct the recovery logic in vm_page_alloc_contig:
what is really needed on this code snipped is that all the pages that
are already fully inserted gets fully freed, while for the others the
object removal itself might be skipped, hence the object might be set to
NULL.

Sponsored by:	EMC / Isilon storage division
Reported by:	alc, kib
Reviewed by:	alc
Only allocate 2 bounce pages for maps that can only use them for buffers that
are unaligned on cache lines boundary, as we will never need more.