how do I downgrade from 11-current to 10-stable

[Matthew D. Fuller]

On Sun, May 31, 2015 at 04:35:35PM -0700 I heard the voice of
Garrett Cooper, and lo! it spake thus:
> 
> V7 support was never MFCed to stable/9. It’s in stable/10 and newer
> and was included in 10.0-RELEASE:

Right, but it's not listed in 10.0's (or stable/10's) geli.8; _that_
rev was never MFC'd:

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r265950 | thomas | 2014-05-13 10:46:52 -0500 (Tue, 13 May 2014) | 5 lines

Add mention of metadata version 7 in FreeBSD 10.0

Reviewed by:    pjd
MFC after:      1 day

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-- 
Matthew Fuller     (MF4839)   |  fullermd at over-yonder.net
Systems/Network Administrator |  http://www.over-yonder.net/~fullermd/
           On the Internet, nobody can hear you scream.