Force Mac OS shared library extension to .so
Force Mac OS shared library extension to .so

Darwin and libtool seem confused about what shared library
extension they actually use.

https://bugs.freedesktop.org/show_bug.cgi?id=57714

freedesktop-unofficial-mirror/p11-glue__p11-kit,Distrotech/p11-kit,Distrotech/p11-kit,freedesktop-unofficial-mirror/p11-glue__p11-kit,pspacek/p11-kit,pspacek/p11-kit,lkundrak/p11-kit,lkundrak/p11-kit,freedesktop-unofficial-mirror/p11-glue__p11-kit,Distrotech/p11-kit,pspacek/p11-kit,pspacek/p11-kit,lkundrak/p11-kit,Distrotech/p11-kit