BIND 10 #2535: handle escaped characters in TXTLikeImpl::toText

[BIND 10 Development]

#2535: handle escaped characters in TXTLikeImpl::toText
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            Reporter:  jinmei        |                        Owner:
                Type:  task          |  vorner
            Priority:  medium        |                       Status:
           Component:  libdns++      |  reviewing
            Keywords:                |                    Milestone:
           Sensitive:  0             |  Sprint-20130108
         Sub-Project:  DNS           |                   Resolution:
Estimated Difficulty:  3             |                 CVSS Scoring:
         Total Hours:  0             |              Defect Severity:  N/A
                                     |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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Comment (by muks):

 Updated `ChangeLog` message:
 {{{
 Added escaping of special characters (double-quotes, semicolon,
 backslash, etc.) in text-like RRType's toText() implementation.
 Without this change, some TXT and SPF RDATA were incorrectly
 stored in SQLite3 datasource as they were not escaped.
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/2535#comment:12>
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