[mythtv] Link failure with clang

[Craig Treleaven]

At 8:45 AM +1100 3/22/13, Jean-Yves Avenard wrote:
>On Friday, 22 March 2013, Craig Treleaven wrote:
>I'm not a developer so I'm probably missing something obvious.  I'm 
>trying to build mythtv-fixes 0.26 on OS X using clang for MacPorts. 
>It fails with the following error message:
>
>Undefined symbols for architecture x86_64:
>   "_dvdnav_get_highlight_area_from_group", referenced from:
>       DVDRingBuffer::DVDButtonUpdate(bool) in dvdringbuffer.o
>
>
>This arose following a commit on January 20, 2013:
>
><https://github.com/MythTV/mythtv/commit/012ebe9de7e20a0bae1920cfc55199ad63937636>https://github.com/MythTV/mythtv/commit/012ebe9de7e20a0bae1920cfc55199ad63937636
>
>I can build versions of 0.26 prior to this commit.
>
>Sounds like you have some stuff that didn't get recompiled. That 
>commit is good and properly 
>added dvdnav_get_highlight_area_from_group to libdvdnav.
>
>Are you sure you don't have old header files in the way?

Thanks.  Indeed, it was an old header file.  Now I've just got to 
figure why the header install directory is being listed _first_ with 
0.26, when it used to be listed last with 0.25.

Craig