Fix missing JobHisto fields in make_mysql_tables

Fix missing JobHisto fields in make_mysql_tables

Manual workaround:

  ALTER TABLE JobHisto
      ADD COLUMN RealStartTime DATETIME,
      ADD COLUMN isVirtualFull     TINYINT    default 0,
      ADD COLUMN CompressRatio     float      default 0,
      ADD COLUMN Rate              float      default 0,
      ADD COLUMN LastReadStorageId Integer    default 0,
      ADD COLUMN LastReadDevice    blob,
      ADD COLUMN WriteStorageId    integer    default 0,
      ADD COLUMN WriteDevice       blob,
      ADD COLUMN Encrypted         int        default 0;