BIND 10 #1870: install complete header files

[BIND 10 Development]

#1870: install complete header files
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                   Reporter:         |                 Owner:  jinmei
  jinmei                             |                Status:  accepted
                       Type:         |             Milestone:
  defect                             |  Sprint-20121009
                   Priority:         |            Resolution:
  medium                             |             Sensitive:  0
                  Component:  build  |           Sub-Project:  DNS
  system                             |  Estimated Difficulty:  5
                   Keywords:         |           Total Hours:  0
            Defect Severity:  N/A    |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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Comment (by jinmei):

 trac1870 is ready for review.

 I've created a new "examples" directory, moved src/bin/host there,
 and provided a separate configure.ac, Makefile.am, etc as a template
 for external projects.  The host program itself wasn't modified and
 doesn't have to reviewed.  The only non trivial things to review
 is the top level configure.ac and m4 macros.

 Note that with this change we won't install b10-host any more.  But I
 think it's okay - it's always been pretty experimental, not really
 clean, with missing tests, so it actually hasn't had the required
 quality to be include in releases in the first place.

 One more note: I intentionally excluded some of the header files under
 util and dns.  These are generally expected to be internal or soon to
 be deprecated.  We can add them later if and when we really see the
 need for including them.

 This is proposed changelog:
 {{{
 484.?   [bug]*          jinmei
         Make sure all public header files for libb10-dns++ are installed.
         Template configure.ac and utility AC macros for external projects
         using the library is provided under the "examples" directory.
         The src/bin/host was moved as part of the examples (and not
         installed with other BIND 10 programs any more).
         (Trac #1870, git TBD)
 }}}

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Ticket URL: <http://bind10.isc.org/ticket/1870#comment:9>
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