Install VBoxDTrace scripts/libs/testcases.
Adding the VBoxDTrace wrapper binary to the installers. Fixing extpack build break. Simplified VBOX_WITH_DTRACE* test in the makefiles.
VBoxBFE: RIP.
Installer: add VBoxHostChannel service library.
Guest Control: Update (FreeBSD installer).
Installer/FreeBSD: Include VBoxREM32.so and VBoxREM64.so in 32bit builds
Installer/FreeBSD: Export missing files