[NTOS:LPC]

[NTOS:LPC]
- Fix the usage, or add support (for NtSecureConnectPort based on patches by Alexander Andrejevic, and for NtReplyPort, NtReplyWaitReceivePortEx, NtListenPort by me) for capturing user-mode parameters and using SEH in LPC functions.
CORE-7371 #resolve
- Make NtSecureConnectPort call SeQueryInformationToken, now that the latter is implemented since r73122.
- Fix ObDereferenceObject usage for Port vs. ClientPort in NtSecureConnectPort.
- ObCloseHandle certainly needs to be called with the actual 'PreviousMode'.

svn path=/trunk/; revision=73164