autotools: Teach about tracker3 search engine
Add --enable-tracker3 option (off by default, like in meson) and hook the tracker3 search engine to build. Also, make sure it's part of dist.
Fixes: #2912 (closed)
Add --enable-tracker3 option (off by default, like in meson) and hook the tracker3 search engine to build. Also, make sure it's part of dist.
Fixes: #2912 (closed)