OPEN-50 Adding settings to Windows for controlling proprietary libs. This allows quictime to be used. Additionally, once a solution for FMOD is found this can also be enabled.

OPEN-50 Moved USE_PRECOMPILED_HEADERS=ON from common, to Windows only settings as it doesn't appear to be used by others.

OPEN-50 Changed the default number of job slots, for Linux configurations, to a level (2) that all should be able to manage.

OPEN-50 Adding UNATTENDED=ON to Windows' configurations so that the viewer can be built by all users out-of-the-box. OS Devs with full VS can switch it on if they want, however this is not needed any more for Open Source builds.

OPEN-50 Changing windows build command from 'devenv.com', to 'msbuild.exe' along with associated options and arguments.

remove unused configurations for standalone, and change open source configuration names from "OpenSource" prefix to "OS" suffix

update jpeglib archive on linux (now uses correct lib layout fixing erroneous linkage to system jpeg lib).

Reviewed by alain and nat.

 use VS2010 Autobuild