Added OpenGL 3D support for Linux Guests in VirtualBox 2.2

Sun released the open-source Virtual Machine Software VirtualBox 2.2 Beta 1 yesterday for testing by its users. As a major update, this version brings exciting new features, including the long-awaited OpenGL 3D acceleration support for Linux guests. In last December, Sun introduced OpenGL 3D acceleration for Windows users.

New features added in VirtualBox 2.2 Beta 1 include:
* Supports importing/exporting OVF (Open Virtualization alization Format) appliance
* Host-only Network Mode
* Hypervisor Optimization
* VT-x/AMD-V and USB (OHCI & EHCI) (Qt GUI only) are enabled by default when a new virtual machine is created)
* Experimental USB support for OpenSolaris hosts
* Shared folder support for Solaris and OpenSolaris guests
* OpenGL 3d acceleration for Linux guests
* Experimental support for OS X 10.6 hosts running on 64-bit and 32-bit kernel

In addition, VirtualBox 2.2 Beta 1 has fixed a lot of bugs.

1. Best practice tool for Linux: Command Line Technology
2. Linux System Management Technical Manual (Chinese version 2)
3. Linux Kernel Development Guide for Embedded Systems