VirtualBox 4.3.2.90405

# The following items were fixed and/or added:
* VMM: fixed restoring of the auxiliary TSC MSR in VT-x that caused host BSODs on Windows 8.1 hosts and unpredictable behavior on other hosts
* VMM: provide fake values for a couple of MSRs to make more guests happy on certain hosts
* VMM: fixed detection of VT-x on certain machines where the BIOS would not set the VMX LOCK feature bit, which affected the VM settings in the GUI
* VMM: fixed TPR threshold which caused BSODs on Windows XP guests that use the I/O APIC (VT-x only)
* VMM: fixed PATM saved state incompatibility for software virtualized VMs
* VMM: don't fail if AMD-V isn't available if the VM is configured to use software virtualization
* GUI: fixed guest resize breakage on visual representation mode change (when switching from normal to fullscreen etc)
* GUI: make sure the guest screen is resized after restoring a VM from a saved state if the host screen size changed
* GUI: disabled SCROLL LED sync from HID LEDs synchronization (Mac OS X hosts only)
* Webcam passthrough improvements including GUI support (see the manual for more information)
* Guest Control: implemented more IGuestSession methods
* Guest Control: added support for deleting and renaming guest files + directories in VBoxManage
* Guest Control: various bugfixes
* API: incorrect handling of hardware UUID default value, resulting in an all zero DMI/SMBIOS UUID, which leads to Windows requesting re-activation
* 3D support: fixed crash on shutdown if 2D video acceleration is enabled (Mac OS X hosts only)
* 3D support: miscellaneous fixes
* Storage: fixed detection of CD/DVD media when switching from an empty to a host drive with passthrough enabled
* Storage: fixed hang of the VM process when the disk is full under certain circumstances
* NAT: listen for changes of NAT Network setting at runtime
* NAT: NAT Network DHCP server now saves leases to a persistent storage
* Main: monitor changes in host DNS configuration
* Mac OS X host: reworked a mechanism of adding a VM desktop alias from the VM selector
* Mac OS X installer: remove old kernel extensions during upgrade
* Linux Additions: correctly set umask before installing
* X11 Additions/3D: fix freezes starting 3D desktop
* X11 Additions/3D: fix depth buffer support
* X11 Additions/3D: fix Age Of Empires 3 rendering
* Windows Additions/3D: fix Google Earth plugin rendering
* Windows Additions/WDDM: autoresize fixes