made the zynaddsubfx-2.4.4 work
Squashed commit of the following:

commit 92f8b5a5a78f87ba2e36ecf9b95150a4079468be
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Tue Dec 2 14:08:12 2014 +0100

    add docs patch

commit 73179f3a810c5b042a64945870f1ae2a747df2c7
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Tue Dec 2 14:05:34 2014 +0100

    add patch and now it works (for the first time)

commit e6339ae47b6018daa66c382b39677e29591fb4d0
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Tue Dec 2 13:34:24 2014 +0100

    add overlay.xml