message: Increase Version to 2.2.0
diff: // These need to be macros, as version.cpp's and bitcoin-qt.rc's voodoo requires it
  #define CLIENT_VERSION_MAJOR 2
  -#define CLIENT_VERSION_MINOR 1
  +#define CLIENT_VERSION_MINOR 2
  #define CLIENT_VERSION_REVISION 0
  #define CLIENT_VERSION_BUILD 0
  