Add more MCS fixes to make sandbox working
    Make faillog MLS trusted to make sudo_$1_t working
    Allow sandbox_web_client_t to read passwd_file_t
    Add .mailrc file context
    Remove execheap from openoffice domain
    Allow chrome_sandbox_nacl_t to read cpu_info
    Allow virtd to relabel generic usb which is need if USB device
    Fixes for virt.if interfaces to consider chr_file as image file type