Extend the Link DBG_UTIL support to non-member function Links HEADmaster

...so that they don't report "unknown" (and make empty links report "empty"
instead, for clarification).  This introduces a new LINK_NONMEMBER macro; the
non-default Link ctor should no longer be used directly, so make it private.

Change-Id: I4ae99758de57adb8569ce98cb3824e875b26c959
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/180593
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>

0 files changed, 0 insertions, 0 deletions