Security fix for libtool

[Philipp Thomas]

I'm maintaining libtool for SuSE/Novell and have a problem where I would
need help from upstreams.  You just released 2.2.6a to fix the local load
problem.  The CVE says that libtool 1.x is also affected but sources have
changed enough so that the fix for 2.x can't be applied.  In particular the
libtool 1.5.x source has a tryall_dlopen that only takes two parameters.

If the local load problem does affect 1.5.x I need help in coming up with a
patch as I can't do a version update for older released products.

Philipp