build: osx: Fix incomplete framework packaging for codesigning

Starting with 10.9, Framework versions must be signed individually, rather
than as a single bundle version, in order to be properly codesigned. This
change ensures that the proper plist files and symlinks are present prior to
packaging.

Rebased-From: 65f3fa8
Remove mention of MacPorts from OSX build docs

Rebased-From: d547ebf
build: change cdrkit location in build-process.md

The cdrkit.org domain expired.
Thanks to gdm85 on IRC for reporting this.

Rebased-From: 27fc5277f73e510c2150dc29308fdf2dc6a96053
Merge tag 'v0.9.3' into 0.9.x-ljr

Tag 0.9.3 release final