[NTDLL]: Use NT-style calculation in CsrClientCallServer. In special cases, structure...

[NTDLL]: Use NT-style calculation in CsrClientCallServer. In special cases, structures can be padded at the end, causing the size of the structure - the size of last field, not to be equal to the offset of the last field. Doing math the NT way will, in some cases (if the CSR union is not 8-byte aligned), cause the TotalLength to be 4 bytes bigger than really needed.
[CSRSRV]: Increase the padding to 39*4 bytes, instead of 35, to match Windows.

svn path=/trunk/; revision=59913