We should only use generic foo function name when it takes params
that are also dependent on UNICODE define, like
LoadCursor( nullptr, IDC_ARROW )
where IDC_ARROW is defined in MSVC headers synchronised with
LoadCursor definition.

We should always use Unicode API for any file paths operations,
because otherwise we will get "?" for any character in path that
is not in current non-unicode codepage, which will result in failed
file operations.

Change-Id: I3a7f453ca0f893002d8a9764318919709fd8b633
Reviewed-on: https://gerrit.libreoffice.org/42935Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>