Split CppunitTest_sw_uiwriter3 into a uiwriter3 and a uiwriter8

My build with 16G ram now regularly fails with:

g++: internal compiler error: Killed (program cc1plus)
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://bugs.opensuse.org/> for instructions.
make[1]: *** [solenv/gbuild/LinkTarget.mk:337: workdir/CxxObject/sw/qa/extras/uiwriter/uiwriter3.o] Error 4
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:289: build] Error 2

Change-Id: Ia758f2e905a13369a9eef7eece4104bb9ea76303
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/139025
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins

sw/CppunitTest_sw_uiwriter8.mk

@@ -0,0 +1,14 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t -*-
+#*************************************************************************
+#
+# This file is part of the LibreOffice project.
+#
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+#
+#*************************************************************************
+
+$(eval $(call sw_uiwriter_test,8))
+
+# vim: set noet sw=4 ts=4:

sw/Module_sw.mk

@@ -116,6 +116,7 @@ $(eval $(call gb_Module_add_slowcheck_targets,sw,\
     CppunitTest_sw_uiwriter5 \
     CppunitTest_sw_uiwriter6 \
     CppunitTest_sw_uiwriter7 \
+    CppunitTest_sw_uiwriter8 \
     CppunitTest_sw_layoutwriter \
     CppunitTest_sw_layoutwriter2 \
     CppunitTest_sw_mailmerge \