redundant.

- Allow removal of keys from the overlay.
- One or two whitespace fixes.

  identifies current thread.
- Make X11DRV_GetKeyboardLayoutList follow the same rule as
  X11DRV_GetKeyboardLayout and X11DRV_GetKeyboardLayoutName for CJK
  locales.
- There is no need to have 0xe001 in the high word of Japanese
  keyboard layouts lcids in main_key_tab, the above APIs take care of
  it.
- High word of a returned keyboard layout duplicates low word for non
  CJK locales under Windows.

Implemented CPHashSessionKey.

RasCreatePhonebookEntry{A,W}, RasDeleteSubEntry{A,W}, RasDial{A,W},
RasEditPhonebookEntry{A,W}, RasGetConnectStatus{A,W},
RasGetEntryDialParamsW, RasHangUpW, RasGetEntryPropertiesW,
RasGetErrorString{A,W}, RasGetProjectionInfo{A,W},
RasRenameEntry{A,W}, RasSetEntryDialParams{A,W},
RasSetSubEntryProperties{A,W}.

- Remove unneeded function.

marshaling in a child thread where COM has not been initialized.

- Begin implementing interface stubs.

comparisons based on the full feature names.

  from testing that, although documented nowhere, having ADDLOCAL on
  the install line overrides INSTALLLEVEL.
- Track all files extracted from cabinents as tempfiles so they can be
  removed at the end of the install to not leave uninstalled but
  uncabbed files laying around.

- Set the INSTALLLEVEL in CostFinalize if it is not set.