PocketPC support.
* include/aygshell.h: New file [_WIN32_WCE]. Declare most common
functions for using aygshell on PocketPC:
SHCreateMenuBar, SHFindMenuBar, SHCreateNewItem, SHFullScreen,
SHSipInfo, SHHandleWMActivate, SHHandleWMSettingChange
* include/commctrl.h [_WIN32_WCE] Add function prototypes for
command bar API on PocketPC:
CommandBar_Create, CommandBar_Show, CommandBar_AddBitmap,
CommandBar_InsertComboBox, CommandBar_InsertMenubar,
CommandBar_InsertMenubarEx, CommandBar_DrawMenuBar,
CommandBar_GetMenu, CommandBar_AddAdornments, CommandBar_Height,
CommandBar_InsertButton, CommandBar_Destroy.
* include/winbase.h [_WIN32_WCE] (WIN32_FIND_DATA{A|W}): Remove
fields not present on PocketPC.
(GetCurrentThreadId): Conditionally declare as extern function
without dllimport attribute on PocketPC.
(ResetEvent): Likwise.
(SetEvent): Likewise.
* include/wingdi.h [_WIN32_WCE] (GetTextExtentPoint32{A|W}):
Conditionally declare as extern function without dllimport
attribute on PocketPC.
* winuser.h [_WIN32_WCE] (DialogBoxParam{A|W}): Conditionally
declare as extern function without dllimport attribute on PocketPC.
