Add a favicon to the Wasm build

...to avoid "GET http://localhost:6931/favicon.ico 404 (File not found:
instdir/program/favicon.ico)" errors in the browser console.  The checked-in
static/emscripten/favicon.ico is a copy of
<https://www.libreoffice.org/themes/libreofficenew/favicon.ico>.

Change-Id: Ib40b3f159879cc39244bd81d7fc8a36cc8c7184a
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/163827
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>

Repository.mk

@@ -1033,7 +1033,10 @@ $(eval $(call gb_Helper_register_packages_for_install,ooo,\
 	) \
 	resource_fonts \
 	cui \
-	$(if $(filter EMSCRIPTEN,$(OS)),unoembind) \
+	$(if $(filter EMSCRIPTEN,$(OS)), \
+	    favicon \
+	    unoembind \
+	) \
 ))
 
 $(eval $(call gb_Helper_register_packages_for_install,ooo_fonts,\

static/Module_static.mk

@@ -19,6 +19,7 @@ ifeq (EMSCRIPTEN,$(OS))
 $(eval $(call gb_Module_add_targets,static,\
     CustomTarget_emscripten_fs_image \
     CustomTarget_unoembind \
+    Package_favicon \
     Package_unoembind \
     StaticLibrary_unoembind \
     $(if $(ENABLE_QT5), \

static/Package_favicon.mk

@@ -0,0 +1,16 @@
+# -*- Mode: makefile-gmake; tab-width: 4; indent-tabs-mode: t; fill-column: 100 -*-
+#
+# 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 $(call gb_Package_Package,favicon,$(SRCDIR)/static/emscripten))
+
+$(eval $(call gb_Package_add_files,favicon,$(LIBO_BIN_FOLDER), \
+    favicon.ico \
+))
+
+# vim: set noet sw=4 ts=4: