BIND 10 #2048: configure check for pyexpat

[BIND 10 Development]

#2048: configure check for pyexpat
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            Reporter:  jreed         |                        Owner:
                Type:  task          |  UnAssigned
            Priority:  low           |                       Status:  new
           Component:  build system  |                    Milestone:  New
           Sensitive:  0             |  Tasks
         Sub-Project:  Core          |                     Keywords:
Estimated Difficulty:  0             |              Defect Severity:  N/A
         Total Hours:  0             |  Feature Depending on Ticket:
                                     |          Add Hours to Ticket:  0
                                     |                    Internal?:  0
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 Have a configure.ac check for pyexpat.  This is used by b10-stats-httpd.

 (Also what other dependencies aren't checked in configure?)

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Ticket URL: <http://bind10.isc.org/ticket/2048>
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