Half-Life 2 Beta updated

We have released a Beta update for Half-Life 2 and associated games. Changes in this update are:

• Added a gl_finish cvar, useful for certain Linux GL drivers that require an explicit GL_Finish() at the end of each frame

• Fixed some materials having incorrect sounds when hit

• Fixed some missing responses from Rebel chatter

• Fixed bad lighting on some female rebel characters

• Fixed being able to pickup Grigori's annabelle in Ravenholme if you got to the wrong place at the wrong time