message: Version number update to 13.6.7
diff: #define CLIENT_VERSION_MAJOR 0
  #define CLIENT_VERSION_MINOR 13
  #define CLIENT_VERSION_REVISION 6
  -#define CLIENT_VERSION_BUILD 6
  +#define CLIENT_VERSION_BUILD 7
  //! Set to true for release, false for prerelease or test build
  #define CLIENT_VERSION_IS_RELEASE true
  