a_validate_db structure

Holds information needed for database validation using the DBTools library.

• connectparms const char *
  Parameters needed to connect to the database.
• errorrtn MSG_CALLBACK
  Address of an error message callback routine or NULL.
• index a_bit_field
  Set TRUE to validate indexes.
• msgrtn MSG_CALLBACK
  Address of an information message callback routine or NULL.
• quiet a_bit_field
  Set TRUE to operate without printing messages.
• statusrtn MSG_CALLBACK
  Address of a status message callback routine or NULL.
• tables p_name
  Pointer to a linked list of table names or index names (when the index field is set TRUE).
• type char
  The type of validation to perform.
• version unsigned short
  DBTools version number (DB_TOOLS_VERSION_NUMBER).