HttpSendRequestExW, InternetGetLastResponseInfoW,
  InternetConfirmZoneCrossing{A,W}, InternetDial{A,W},
  InternetGoOnline{A,W}, InternetHangUp, CreateMD5SSOHash,
  InternetClearAllPerSiteCookieDecisions,
  InternetEnumPerSiteCookieDecision{A,W}, InternetGetCookieEx{A,W},
  InternetGetPerSiteCookieDecision{A,W},
  InternetSetPerSiteCookieDecision{A,W}, InternetSetCookieEx{A,W},
  ResumeSuspendedDownload, RetrieveUrlCacheEntryFileW,
  UnlockUrlCacheEntryFileW, {Create,Delete}UrlCacheEntryW,
  CommitUrlCacheEntryW, RetrieveUrlCacheEntryStreamW,
  FindCloseUrlCache, FindFirstUrlCacheEntryEx{A,W},
  FindFirstUrlCacheGroup, FindNextUrlCacheEntry{,Ex}{A,W},
  FindNextUrlCacheGroup, SetUrlCacheEntryGroup{A,W},
  {Get,Set}UrlCacheGroupAttribute{A,W}, SetUrlCacheConfigInfo{A,W}.
- Spec file stubs for new undocumented functions
  ForceNexusLookup{,ExW}, Ftp{Get,Put}FileEx, HttpCheckDavCompliance,
  InternetAlgIdToString{A,W}, InternetFortezzaCommand,
  InternetGetCertByURLA, InternetQueryFortezzaStatus,
  InternetSecurityProtocolToString{A,W}, InternetSetDialState{A,W},
  InternetShowSecurityInfoByURL{A,W}, IsUrlCacheEntryExpired{A,W},
  Privacy{Get,Set}ZonePreferenceW, RegisterUrlCacheNotification,
  UrlZonesDetach.
- Use memcpy instead of strncpy in InternetGetLastResponseInfoA.
- Add and improve some traces.
- Fix my own coding style in InternetTimeToSystemTimeW.
- Fix a couple of signedness warnings.