ports/137843: Cannot compile devel/apr (version 1.3.8.1.3.9) on AMD64

[Matthias Andree]

Same for me, on i386. Removing the listed leftover libtool15/libltdl15  
files/directories let the devel/apr build succeed, where it would fail  
before.

Given that the devel/libtool15 port is gone:

1. Can we have a pkg-install script that purges the obsolete libtool15  
stuff (as listed, but substituting ${PKG_PREFIX} for /usr/local) post a  
successful libtool22 install?  Apparently the older pkg-plist were  
incomplete, so that libtool15 didn't get completely removed on uninstall,  
and a libtool22/libltdl22 post-installation cleanup of libtool15 seems the  
natural way to solve.

2. Alternatively, please mention in /usr/ports/UPDATING that  
libtool15/libltdl15 cruft needs to be purged manually (file list as above).

Thank you.

-- 
Matthias Andree