Blender Git Loki

WebPlugin
fix:
* web plugin works on opera too

sandboxing:
* added AppArmor configuration
* enabled privilege separation for the web plugin: the blender player can run as a lower privileged user, xauth token is generated on the fly .

testing:
* web plugin tested on ubuntu 32/64bit, fedora and FreeBSD

Changed only cmake build script: AppArmor is enabled by default, if you want to enable privilege separation instead, you have to change the cmake variable WEBPLUGIN_SANDBOX_MODE to privsep (or none to
disable it).

Warning: source/gameengine/GamePlayer/xembed/blenderplayer-wrapper.c must be setuid root in order to change user successfully