This patch makes the host the viewer will try to connect to for connecting to the voice component configurable. It adds the "VoiceHost" and "VoicePort" settings which can be modified from the Client menu. Linux currently has no SLVoice binary, which stops voice from working. However, due to how it works, a Linux binary isn't 100% necessary. The Linux viewer has all the required code to use it, and is only missing the SLVoice executable. It can (verified) correctly talk to SLVoice.exe running on another computer (or under wine/vmware/etc). This patch could also be good for development purposes and should work fine on Windows versions of SL as well. Usage on Linux requires an executable SLVoice program in the directory. The viewer will verify this file exists and try to run it before attempting to connect to the voice server. Having this program do anything useful is optional, as the user can start the SLVoice program manually.