[NTOS]

[NTOS]
- accesschk.c: Remove redundant SepAccessCheck/SepAccessCheckEx pair of private functions; instead just rename SepAccessCheckEx into SepAccessCheck and use it directly in the code. NOTE: SepAccessCheck is *incomplete* (in particular it doesn't retrieve the information needed to initialize the 'Privileges' parameter).
- sid.c: Comments formatting fix.
- token.c:
  * Finish to implement SeQueryInformationToken . This function is really the same as NtQueryInformationToken but without all the stuff needed for user-mode buffer access protection.
  * Some code simplifications in NtQueryInformationToken.
  I need this to fix a "FIXME: Use SeQueryInformationToken" in some code I'm also fixing (& commit later).

[NDK]: Fix parameter types and add annotations to RtlCopySidAndAttributesArray.

[KMTESTS:NTOS_SE]
- Reenable the 'SeQueryInfoToken' test.
- Show that SeQueryInformationToken doesn't support 4 token information classes, which are supported only by NtQueryInformationToken.
- Fix calling of SeAccessCheck. In particular the 'Privileges' parameter is not allocated by the caller, but instead is allocated by SeAccessCheck *and* returned to the caller (who then must free the buffer using SeFreePrivileges). This fixes the encountered BSODs that leaded to disabling preventively the test in r59178.
- Minor code cleaning.

svn path=/trunk/; revision=73122