Corrected calculation of version id, incorrect last two digits if < 10
  Keep "sp1" or "a" in MYSQL_NO_DASH_VERSION, to set correct version in
  RPM spec file
  Added MYSQL_NUMERIC_VERSION that is like MYSQL_NO_DASH_VERSION before
  Added clear doc how the different version variables differ
SocketServer.cpp:
  Corrected typo in debug error message