fdo#77971 Writer:Better font selection in Japanese locale on Mac OSX.

This patch resolves the problem that Basic fonts(Asian) are Arial
Unicode MS in Japanese locale on Mac OSX.
Expected behavior is that Basic fonts(Asian) are Hiragino Mincho ProN
font.

LibreOffice 4.1 and later, on Mac OS X, the font family names are kept
without suffix(e.g. w3, w6) in the system font list.
Some font names in VCL.xcu (font family name including the weight
as suffix) doesn't match the font name kept in the system font list.

This problem reproduces at the CJK fonts environment.
This patch resolves this problem with Japanese fonts environment only.

Change-Id: Iaf3eb2225fbc6375d1911976ac40a4d8f2fa0590
Reviewed-on: https://gerrit.libreoffice.org/12455
Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>