[vserver] vserver-patch and util-vserver version (Kernel 2.6.36)

Hi,

for various reasons I compiled myself a 2.6.36.1 including the
VServer-Patch for 2.6.36, vserver-stat works, vserver start fails
'vc_set_sched(): Function not implemented', util-vserver tried are
0.30.216~r2772-6 and 0.30.216-pre2864-2+b1, both Debian packages.
I am aware there are more recent tools, though I am not aware there are
ready-made debian packages.
Is there any way to see the minimum required util-vserver vrsion for
some tool? And if so, would it be possible to just add that info to the
matrix at http://linux-vserver.org/?
If I use the most recent tools now and go back to my previous kernel
with some older vserver patch, will this work? In other words: are
util-vserver backward compatible at least within 2.3 branch?
Specific versions are:
Kernel 2.6.32.5:
VCIVersion: 0002:0305
VCISyscall: 236
VCIKernel: 13000ff1

Kernel 2.6.36.1:
VCIVersion: 0002:0307
VCISyscall: 236
VCIKernel: 13000fd1

Regards,
        Adrian

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