Cannot locate libffi.so.6 on openSUSE Leap 42.1

[Andrew Bernard]

The downloadable version of lilypond 2.19.32 will not run on openSUSE Leap 42.1 
as it is unable to find libffi.so.6, which is not installed on this OS.

The lilypond distribution includes this shared library in its usr/lib64 
directory. But the installer script only creates a lilypond wrapper start 
script referencing usr/lib and not usr/lib64:

#!/bin/sh
me=`basename $0`
#export LD_LIBRARY_PATH="/home/andro/lilypond/usr/lib"
export 
LD_LIBRARY_PATH="/home/andro/lilypond/usr/lib:/home/andro/lilypond/usr/lib64"
exec "/home/andro/lilypond/usr/bin/$me" "$@"


If I add the lib64 directory as above, which contains libffi.so.6 all is well.

Why does the installer script omit the lib64 directory?

This is a defect because users of the downloadable lilypond cannot run it on 
openSUSE.

Andrew