It used to use UniscribeLayout when any Unicode varaiation selector
were found, disregard whether it is a Asian or a complex script.
However CJK Ideograph Vairations are better layouted by WinSimpleLayout.

Just check the case, differ based on the base character of the
variation sequence.

Change-Id: I4a2ad160a9ab70a6dbc96c301a6a5ad16e140245
Reviewed-on: https://gerrit.libreoffice.org/29619Reviewed-by: Khaled Hosny <khaledhosny@eglug.org>
Tested-by: Khaled Hosny <khaledhosny@eglug.org>