origin won't work if origin/HEAD points to nowhere, which is a valid
use-case.

10f28d5c "callcatcher: build fixes" had removed
this with the comment "SetFont() doesn't do anything" but that is clearly wrong:
Without this, e.g. bold text within text fields is not displayed as such (e.g.,
"File - New - Templates and Documnets - Templates - Presentation Backgrounds -
Black and White": the captions in the right hand pane ("Title:", "Date:", etc.)
should be bold).

See:
https://bugs.freedesktop.org/show_bug.cgi?id=44982#c6
https://bugs.freedesktop.org/show_bug.cgi?id=44982#c7

for why.

This never worked before, going back to the OOo days...

Fix also works for -h and -?

Import, export and testcase.

On Linux, public templates should not be hidden at the linker level.
But on Windows, dllimport causes trouble. So create a new macro
to be used specifically with templates that does the right thing
on both platforms.
(http://lists.freedesktop.org/archives/libreoffice/2012-March/028041.html
and followups)