bitcoin/bitcoin — pull request #1997 by Diapolo (2012-11-09 22:03:11+00:00)
Title: simplify CDBEnv::Open() / fix small glitches

- remove pathEnv from CDBEnv, as this attribute is not needed
- change path parameter in ::Open() to a reference
- make nDbCache variable an unsigned integer
- remove a missplaced ";" behin ::IsMock()