Merged compatible code from no-statistics branch.
Merge branch 'master' of github.com:jtobey/bitcoin-abe into master-test
Merge
Move conn and cursor into SqlAbstraction.  Implement reconnect.
Fixes
Expose store._sql for upgrade.py.
Ported to SqlAbstraction-based DataStore, back to Abe29 (tested Abe37).
Log statement params at %r, not %s.
Bug fix: fix SQL flavour for upgrade.
Added X11/Hirocoin support
Note new way to extract genesis tx.
calculate_target: Avoid "ValueError: negative shift count" on very low difficulty.
Needed VARCHAR instead of CHAR to support 3 and 4 character coin codes, and added Hirocoin policy.
Support *_approx for SQLite large integers.
Merge pull request #91 from n00bsys0p/x11-hiro

Added X11/Hirocoin support
Merge branch 'master-test' of github.com:bitcoin-abe/bitcoin-abe
Merge branch 'master' into geekz-patch-1