- Version bump to 6.1.30 (released November 22 2021 by Oracle)

This is a maintenance release. The following items were fixed and/or added:

VMM: Fixed 6.1.28 regression preventing VMs starting when using Hyper-V mode on Windows 10
GUI: Fixed inability to complete First Run wizard after browsing for an external image
GUI: Fixed crash on macOS Big Sur while browsing for an external image from First Run wizard
GUI: Fixed bug on Windows with inability to save taken screenshot under a folder with native name (bug #15561)
GUI: Fixed bug on X11 with drag and drop initiated on single mouse click in VM storage settings
GUI: Fixed settings check on machines not supporting hardware virtualization
GUI: Non critical media related errors should not cause modal pop-up error messages
Host-only networking: Fixed crash parsing /etc/vbox/networks.conf
DVD: Fixed drive lock handling across VM reset
VBoxHeadless: Fixed crash when running on macOS Monterey (bug #20636)
VBoxManage: Fixed incorrect help text for "hostonlyif"
vboximg-mount: Error message if no image is specified
Linux host: For all distribution specific packages (deb/rpm format) fix the packaging so that the feature for unattended installation of guest OSes works
Linux host and guest: Introduced initial support for kernel 5.16
Shared Clipboard: Improved communication between guest and host when guest has no clipboard data to report
Linux Guest Additions: Allow running only one VBoxDRMClient instance (bug #19373)

File "fixes_for_5.14.patch" deleted - fixed upstream.
File "fixes-for-5.15.patch" deleted - fixed upstream.
File "fixes-for-5.16.patch" deleted - fixed upstream.