Contrib: sybase_ct with multiples results sets

Hi: I don't know where to send this. So, please excuse me if this email isn't the correct way. I made some changes in this code to handle multiples results set. I added two new functions: sybase_next_result sybase_result_type I added this constants, too:

      - SYBASE_UNKNOW_RESULT: Unknow result type
      - SYBASE_COMPUTE_RESULT: It's a result CS_COMPUTE_RESULT
      - SYBASE_CURSOR_RESULT: It's a CS_CURSOR_RESULT
      - SYBASE_PARAM_RESULT: It's a CS_PARAM_RESULT
      - SYBASE_ROW_RESULT: It's a CS_ROW_RESULT
      - SYBASE_STATUS_RESULT: It's a CS_STATUS_RESULT

This constants are using in conjuntion with sybase_result_type function. Let me know what do you thing!!!!