doc: update porting guide to new port mechanism
Release notes for version 14.05 (WiP)
release notes (device drivers by ssumpf)
release notes (skalk's section about base-hw)
release notes (session interfaces, build system)
release notes (vfs)
release notes (block-device enc / rump tools)
release notes (source-code management)
release notes (fixes for block enc / rump from cnuke)
release notes (vbox from alex-ab and chelmuth)
release notes (nova section by alex-ab)
release notes (minor vbox fix)
release notes (rm Qt5 on ARM, not newsworthy)
release notes (review by nfeske)
release notes (base-hw smp by m-stein)
release notes (edits of base-hw smp by nfeske)
release notes (intro)
fixup "doc: update porting guide to new port mechanism"
release notes: review of VirtualBox and NOVA sections

@nfeske please merge
version: 14.05