...as the two actually behave subtly differently.

The assumption in the comment is clearly wrong, as osl::Thread::create
returns a boolean result to indicate failure.

Slight modification of a patch by Michael Stahl <mstahl@redhat.com>.

Also, caption shouldn't have a leading ' any more. We have a dedicated
flag for that.

Though normally dimensions don't get removed, since the entire save data
gets re-built whenever the pivot model is modified.  So, this is probably
for limited use cases...

Else the duplicated data fields would disappear after clicking OK in
the layout dialog.

This was not the case previously, for duplicated dimensions.  Without this,
setting layout names (aka custom names) to data fields would not work
properly especially when the data fields are duplicated.

Also CALL_TEST_INVARIANT is never used again.

* Partly reverted commit 660cb78c to preserve
  the oox::PropertyMap::dump() methods that are needed by
  oox::PropertySet::dump() when building dbgutil.
* Did not remove the oox::PropertySet::dump() as well because all is part of
  the oox dumper, I guess we don't want to remove that in it's entirety ...

Although 'gettext' is a 'cross_toolset' dependency, it seems irrelevant.
See http://lists.freedesktop.org/archives/libreoffice/2012-February/025771.html