libtool libraries. Linking of uninstalled libtool libraries into
libraries is under development for 1.4.
* Do not drop library dependencies on platforms that allow them.
+* Linking with uninstalled libraries no longer picks installed ones by
+ mistake.
+* Use libraries from the build tree when running uninstalled
+ executables (may require double linking).
* Allow developers to optimize for build-tree executions.
* Support -export-symbols-regex for controlled symbol exporting.
* Support -R to hardcode directories in library search paths.