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.
Support *_approx for SQLite large integers.
Merge branch 'master-test' of github.com:bitcoin-abe/bitcoin-abe
Fixed AttributeError about _sql for --query.
Made Abe.admin work with latest DataStore.
rev: tolerate None.
Added Bitleu genesis transaction.
Support Bitleu.
Trust RPC transaction hash, just log if Chain disagrees.
Add Bitleu script address version.
Bitleu uses 6 decimal places.
Fix syntax error.