tdf#42949 Fix IWYU warnings in test/

Found with bin/find-unneeded-includes Only removal proposals are dealt with here. Change-Id: Id1ee9b6d44315443d023bdfbf9ae8e5aa2158ab2 Reviewed-on: https://gerrit.libreoffice.org/85171 Tested-by: Jenkins Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

...following up on 314f15bff08b76bf96acf99141776ef64d2f1355 "Extend
loplugin:external to warn about enums".

Cases where free functions were moved into an unnamed namespace along with a
class, to not break ADL, are in:

  filter/source/svg/svgexport.cxx
  sc/source/filter/excel/xelink.cxx
  sc/source/filter/excel/xilink.cxx
  svx/source/sdr/contact/viewobjectcontactofunocontrol.cxx

All other free functions mentioning moved classes appear to be harmless and not
give rise to (silent, even) ADL breakage.  (One remaining TODO in
compilerplugins/clang/external.cxx is that derived classes are not covered by
computeAffectedTypes, even though they could also be affected by ADL-breakage---
but don't seem to be in any acutal case across the code base.)

For friend declarations using elaborate type specifiers, like

  class C1 {};
  class C2 { friend class C1; };

* If C2 (but not C1) is moved into an unnamed namespace, the friend declaration
must be changed to not use an elaborate type specifier (i.e., "friend C1;"; see
C++17 [namespace.memdef]/3: "If the name in a friend declaration is neither
qualified nor a template-id and the declaration is a function or an
elaborated-type-specifier, the lookup to determine whether the entity has been
previously declared shall not consider any scopes outside the innermost
enclosing namespace.")

* If C1 (but not C2) is moved into an unnamed namespace, the friend declaration
must be changed too, see <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71882>
"elaborated-type-specifier friend not looked up in unnamed namespace".

Apart from that, to keep changes simple and mostly mechanical (which should help
avoid regressions), out-of-line definitions of class members have been left in
the enclosing (named) namespace.  But explicit specializations of class
templates had to be moved into the unnamed namespace to appease
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92598> "explicit specialization of
template from unnamed namespace using unqualified-id in enclosing namespace".

Also, accompanying declarations (of e.g. typedefs or static variables) that
could arguably be moved into the unnamed namespace too have been left alone.

And in some cases, mention of affected types in blacklists in other loplugins
needed to be adapted.

And sc/qa/unit/mark_test.cxx uses a hack of including other .cxx, one of which
is sc/source/core/data/segmenttree.cxx where e.g. ScFlatUInt16SegmentsImpl is
not moved into an unnamed namespace (because it is declared in
sc/inc/segmenttree.hxx), but its base ScFlatSegmentsImpl is.  GCC warns about
such combinations with enabled-by-default -Wsubobject-linkage, but "The compiler
doesn’t give this warning for types defined in the main .C file, as those are
unlikely to have multiple definitions."
(<https://gcc.gnu.org/onlinedocs/gcc-9.2.0/gcc/Warning-Options.html>)  The
warned-about classes also don't have multiple definitions in the given test, so
disable the warning when including the .cxx.

Change-Id: Ib694094c0d8168be68f8fe90dfd0acbb66a3f1e4
Reviewed-on: https://gerrit.libreoffice.org/83239
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

Regression from commit 63ff8602c16b0c26927dc3413b12a5368fe367b0. See thread started at https://lists.freedesktop.org/archives/libreoffice/2018-December/081542.html The Application::SetName is mandatory for DDE to work; otherwise InitializeDde() in SfxApplication::SfxApplication() fails. DDE spreadsheet formula expects full name of the target spreadsheet, including path. Fixed sheet name (it's "Sheet1", not "Sheet"). Removed redundant tests (former "testRemoveRefreshListener" tests all). Change-Id: I6299a9ec03c3657a21ad42d0ff87db25cf2be905 Reviewed-on: https://gerrit.libreoffice.org/65079 Tested-by: Jenkins Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

Move XRefreshable Java tests to C++ for ScDDELinkObj. Change-Id: I121d9fe6a66c549e402b0cf6fd54fea1201e443f Reviewed-on: https://gerrit.libreoffice.org/64511 Tested-by: Jenkins Reviewed-by: Jens Carl <j.carl43@gmx.de>