Added basic working stubs of new Windows 2000 API functions.

diff --git a/scheduler/critsection.c b/scheduler/critsection.c
index dabc37c..585ffce 100644
--- a/scheduler/critsection.c
+++ b/scheduler/critsection.c
@@ -28,6 +28,29 @@
 }
 
 /***********************************************************************
+ *           InitializeCriticalSectionAndSpinCount   (KERNEL32)
+ */
+BOOL WINAPI InitializeCriticalSectionAndSpinCount( CRITICAL_SECTION *crit, DWORD spincount )
+{
+    NTSTATUS ret = RtlInitializeCriticalSectionAndSpinCount( crit, spincount );
+    if (ret) RtlRaiseStatus( ret );
+    return !ret;
+}
+
+/***********************************************************************
+ *           SetCriticalSectionSpinCount   (KERNEL32)
+ * This function is available on NT4SP3 or later, but not Win98
+ * It is SMP related
+ */
+DWORD WINAPI SetCriticalSectionSpinCount( CRITICAL_SECTION *crit, DWORD spincount )
+{
+    ULONG_PTR oldspincount = crit->SpinCount;
+    if(spincount) FIXME("critsection=%p: spincount=%ld not supported\n", crit, spincount);
+    crit->SpinCount = spincount;
+    return oldspincount;
+}
+
+/***********************************************************************
  *           MakeCriticalSectionGlobal   (KERNEL32.515)
  */
 void WINAPI MakeCriticalSectionGlobal( CRITICAL_SECTION *crit )
diff --git a/scheduler/thread.c b/scheduler/thread.c
index debf4fa..9647432 100644
--- a/scheduler/thread.c
+++ b/scheduler/thread.c
@@ -844,6 +844,20 @@
 }
 
 
+/***********************************************************************
+ * ProcessIdToSessionId   (KERNEL32)
+ * This function is available on Terminal Server 4SP4 and Windows 2000
+ */
+BOOL WINAPI ProcessIdToSessionId( DWORD procid, DWORD *sessionid_ptr )
+{
+	/* According to MSDN, if the calling process is not in a terminal
+	 * services environment, then the sessionid returned is zero.
+	 */
+	*sessionid_ptr = 0;
+	return TRUE;
+}
+
+
 #ifdef __i386__
 
 /* void WINAPI SetLastError( DWORD error ); */