advapi32: add Security Label sids used by IE7

[Aric Stewart]

yes as far as i can tell there was not an Untrusted label that is 
defined like the others.  I included it in winnt.h for completeness.

-aric

Paul Vriens wrote:
> Aric Stewart wrote:
>> ---
>>  dlls/advapi32/security.c |    4 ++++
>>  include/winnt.h          |   16 +++++++++++++++-
>>  2 files changed, 19 insertions(+), 1 deletions(-)
>>
>>
>>
>> ------------------------------------------------------------------------
>>
>>
> You added WinUntrustedLabelSid to winnt.h but not to security.c. Is that 
> correct?
>