message: Bump version to 1.4.0
  While at it mark the current version as a prerelease (it should be
  always like that for the dev branch).
diff: //! These need to be macros, as clientversion.cpp's and bitcoin*-res.rc's voodoo requires it
  #define CLIENT_VERSION_MAJOR 1
  -#define CLIENT_VERSION_MINOR 3
  +#define CLIENT_VERSION_MINOR 4
  #define CLIENT_VERSION_REVISION 0
  -#define CLIENT_VERSION_BUILD 1 // BU set version 99 to indicate an unreleased version
  +#define CLIENT_VERSION_BUILD 99 // BU set version 99 to indicate an unreleased version
  //! Set to true for release, false for prerelease or test build
  -#define CLIENT_VERSION_IS_RELEASE true
  +#define CLIENT_VERSION_IS_RELEASE false
  /**
  * Copyright year (2009-this)
  