Fork slayer v0.9.26

Olympic release 0.9.25

Merge branch 'develop'

Merge branch 'develop'

Frontier release v. 0.9.23

0.9.22

Hotfix version 0.9.21.1

* Miner fixes and uncle messages

Release v0.9.21

* General fixes and stability improvements

Olympic release (0.9.20)

Merge pull request ethereum#888 from obscuren/develop

miner, flags: Configurable gas price & log flag change