As you know, 0.10 is around the corner, and I was idly wondering about
libbitcoin's compatibility with that. Chances are a noticeable portion
of the network will be switching to 0.10.

gmaxwell has also asked on #darkwallet@freenode:

> < gmaxwell> genjix: Care to review
> http://www.mail-archive.com/bitcoin-development@lists.sourceforge.net/msg06744.html
> < gmaxwell> ?

I didn't review it myself yet, hence asking.

The proposal is "to make non-DER signatures illegal (they've been
non-standard since v0.8.0)".

We're not using OpenSSL in the new libbitcoin-server. However, what
about Obelisk, older libbitcoin versions, and code that relies on that?