[REVIEW-3-4] Ctrl+Alt type shortcuts don't work on Windows

[Andras Timar]

Hi,

A friend of mine asked me, if it was possible backport the following
fix to 3.4, too.

http://cgit.freedesktop.org/libreoffice/core/commit/?id=a75cb232c41b9f895e27dd85532ff624f85181de

default shortcut for .uno:SearchDialog should be Ctrl+H
Ctrl+Alt+F was not good, because on some keyboard layouts it enters a
character. Ctrl+Alt (=AltGr on Windows) should be avoided, if
possible.

Thanks,
Andras