- remove /etc/vservers S_CAPS parsing; this is not really well supported
right now under the new 0.30.208 framework, and we don't currently use
it now that we have Proper. Should be relatively straightforward to
restore if necessary, by using vc_text2cap() instead.
- print better error messages
- use new vc_ctx_create() syscall. Correct the old "legacy" way of
creating a context and reducing its capabilities for posterity, but
don't actually compile it. For the record, apparently you have to
reduce the capabilities in a second call to vc_new_s_context() with
VC_SAMECTX; see kernel/vserver/context.c under "dirty hack for
capremove".