[openssl-dev] recent EC_PRE_COMP changes

[Salz, Rich]

> Well I don't see an ex_data attached to EC_GROUP or EC_METHOD.

No, do you need those?  We can add them.

> When I look at ec_lib.c, pre_comp_type is only being checked in switch
> statements in _free and _dup style wrappers. Seems out of place and oddly
> specific. Just one dude's opinion :)

The precomp stuff is internal to openssl, so I think it's reasonable to put there.