ntdll/kernel32: Pipe information.

- implemented ntdll.NtQueryInformationFile's FilePipeLocalInformation control code 
- reimplemented kernel32.GetNamedPipeInfo on top of it
- enhance current features to make this work both on client and server handles
- now also returning the number of instances
diff --git a/server/trace.c b/server/trace.c
index 216657e..1c1cfc0 100644
--- a/server/trace.c
+++ b/server/trace.c
@@ -2287,6 +2287,7 @@
 {
     fprintf( stderr, " flags=%08x,", req->flags );
     fprintf( stderr, " maxinstances=%08x,", req->maxinstances );
+    fprintf( stderr, " instances=%08x,", req->instances );
     fprintf( stderr, " outsize=%08x,", req->outsize );
     fprintf( stderr, " insize=%08x", req->insize );
 }