build: put symbolic icon in gnome theme

SparkleShare/Linux/Pixmaps/icons/gnome/Makefile.am

@@ -0,0 +1,20 @@
+gnome_theme = gnome
+gnome_themedir = /usr/share/icons/$(gnome_theme)
+
+gnome_theme_icons = apps,sparkleshare-symbolic.svg
+
+install_icon_exec = $(top_srcdir)/build/icon-theme-installer \
+	-t "$(gnome_theme)" \
+	-s "$(srcdir)" \
+	-d "x$(DESTDIR)" \
+	-m "$(mkinstalldirs)" \
+	-x "$(INSTALL_DATA)"
+
+install-data-local:
+	@-$(install_icon_exec) -i -b "$(gnome_themedir)" $(gnome_theme_icons)
+
+uninstall-hook:
+	@-$(install_icon_exec) -u -b "$(gnome_themedir)" $(gnome_theme_icons)
+
+MAINTAINERCLEANFILES = Makefile.in
+EXTRA_DIST = $(wildcard *.png *.svg)