v0.12.3.1

Changes
Reverted accidental RPC field name change (now again "supports without claims").
Using slightly newer compilers.
Changed iteration mechanism for getclaimsintrie to reduce RAM usage.

SHA256
Linux: c8fd34230e9be2d94ab1640ab6e4d03bacc5f3d979c629714142d7e328465c0a
Windows: 4cdba8128b709c28c0768076fdeba00f476c809a598a112508d65d654b985ba5
OSX: 8b584836be981c4cc5816978bfd9ca4de400433ecb0ee95b74a923ee67dd2225