add zynaddsubfx (first try)
Squashed commit of the following:

commit 8a5045dc8587d6f23c3285cc05b44ee92bfdefde
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Mon Dec 1 22:56:19 2014 +0100

    add manifest

commit 188e26898ad92a6e073f1b15cb69eddc9942d5e7
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Mon Dec 1 22:54:42 2014 +0100

    add Manifest for zynaddsubfx

commit 92f51ceda822a190670c60132a5b692121c8f226
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Mon Dec 1 22:44:42 2014 +0100

    add zynaddsubfx (including dssi)

commit b4a3c308a7b9c9e50cb0ff281aa3bd8b9d05f2f9
Author: Ingolf Wagner <palipalo9@googlemail.com>
Date:   Mon Dec 1 22:16:33 2014 +0100

    add basic files