Merged revisions 69702 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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r69702 | russell | 2007-06-18 11:35:02 -0500 (Mon, 18 Jun 2007) | 6 lines

To prevent 92138749238754 more reports of "I have unixodbc installed, but
still can't build *_odbc.so!", check for ltdl directly, instead of just listing
it as another library to include in the unixodbc check in the configure script.
This also makes ltdl show up as a dependency in menuselect so people know what
to go install.  (related to issue #9989, patch by me)

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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@69703 65c4cc65-6c06-0410-ace0-fbb531ad65f3