Add stubs for some new WinXP APIs.

dlls/psapi/psapi.spec

 @ stdcall EmptyWorkingSet(long)
 @ stdcall EnumDeviceDrivers(ptr long ptr)
+@ stub    EnumPageFilesA
+@ stub    EnumPageFilesW
 @ stdcall EnumProcessModules(long ptr long ptr)
 @ stdcall EnumProcesses(ptr long ptr)
 @ stdcall GetDeviceDriverBaseNameA(ptr str long)
@@ -13,6 +15,9 @@
 @ stdcall GetModuleFileNameExA(long long str long)
 @ stdcall GetModuleFileNameExW(long long wstr long)
 @ stdcall GetModuleInformation(long long ptr long)
+@ stub    GetPerformanceInfo
+@ stub    GetProcessImageFileNameA
+@ stub    GetProcessImageFileNameW
 @ stdcall GetProcessMemoryInfo(long ptr long)
 @ stdcall GetWsChanges(long ptr long)
 @ stdcall InitializeProcessForWsWatch(long)

dlls/shdocvw/shdocvw.spec

@@ -111,8 +111,10 @@
 @ stub DoFileDownloadEx
 @ stub DoOrganizeFavDlg
 @ stub DoOrganizeFavDlgW
+@ stub DoPrivacyDlg
 @ stub HlinkFrameNavigate
 @ stub HlinkFrameNavigateNHL
+@ stub ImportPrivacySettings
 @ stub InstallReg_RunDLL
 @ stub IEWriteErrorLog
 @ stub OpenURL

dlls/wintrust/wintrust.spec

 @ stub CryptCATAdminAcquireContext
 @ stub CryptCATAdminCalcHashFromFileHandle
 @ stub CryptCATAdminEnumCatalogFromHash
+@ stub CryptCATAdminPauseServiceForBackup
 @ stub CryptCATAdminReleaseContext
 @ stub CryptCATAdminReleaseCatalogContext
+@ stub CryptCATAdminRemoveCatalog
+@ stub CryptCATAdminResolveCatalogPath
 @ stub CryptCATCatalogInfoFromContext
 @ stdcall WinVerifyTrust(long ptr ptr)