[RPCRT4] Sync with Wine Staging 2.2. CORE-12823

[RPCRT4] Sync with Wine Staging 2.2. CORE-12823

b85c2f7 rpcrt4: Fix some spec file entries.
042b41d rpcrt4: Avoid potential overflow in rpcrt4_protseq_ncacn_np_open_endpoint.
c32cd11 rpcrt4: Acquire new credential handle for each connection.
da05dfd rpcrt4: Store security package name in rpc_server_registered_auth_info.
f8450fa rpcrt4: Handle NULL binding in RpcBindingInqAuthClient{,Ex}.

svn path=/trunk/; revision=74085