general: move the Nautilus icon to the source tree

Instead of using a themed icon.
This is necessary for flatpak Nautilus properly.

Patch made mostly by Mathieu Bridon and help of Patrick Griffis.
Thanks a lot!

configure.ac

@@ -319,6 +319,7 @@ LIBGD_INIT([
 AC_CONFIG_FILES([
 Makefile
 data/Makefile
+data/icons/Makefile
 docs/Makefile
 docs/reference/Makefile
 docs/reference/libnautilus-extension/Makefile

data/Makefile.am

@@ -1,5 +1,7 @@
 NULL=
 
+SUBDIRS = icons
+
 desktopdir       = $(datadir)/applications
 desktop_in_files = 					\
 	org.gnome.Nautilus.desktop.in			\

data/icons/Makefile.am

@@ -0,0 +1,23 @@
+icondir = $(datadir)/icons
+nobase_icon_DATA = \
+	$(srcdir)/hicolor/16x16/apps/org.gnome.Nautilus.png \
+	$(srcdir)/hicolor/22x22/apps/org.gnome.Nautilus.png \
+	$(srcdir)/hicolor/24x24/apps/org.gnome.Nautilus.png \
+	$(srcdir)/hicolor/32x32/apps/org.gnome.Nautilus.png \
+	$(srcdir)/hicolor/48x48/apps/org.gnome.Nautilus.png \
+	$(srcdir)/hicolor/symbolic/apps/org.gnome.Nautilus-symbolic.svg
+
+gtk_update_icon_cache = gtk-update-icon-cache -f -t $(datadir)/icons/hicolor
+
+install-data-hook: update-icon-cache
+uninstall-hook: update-icon-cache
+update-icon-cache:
+	@-if test -z "$(DESTDIR)"; then \
+		echo "Updating Gtk icon cache."; \
+		$(gtk_update_icon_cache); \
+	else \
+		echo "*** Icon cache not updated.  After (un)install, run this:"; \
+		echo "***   $(gtk_update_icon_cache)"; \
+	fi
+
+EXTRA_DIST = $(nobase_icon_DATA)

data/icons/hicolor/symbolic/apps/org.gnome.Nautilus-symbolic.svg

@@ -0,0 +1,30 @@
+<?xml version='1.0' encoding='UTF-8'?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg xmlns:cc='http://creativecommons.org/ns#' xmlns:svg='http://www.w3.org/2000/svg' xmlns:inkscape='http://www.inkscape.org/namespaces/inkscape' id='svg7384' xmlns:sodipodi='http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd' version='1.1' inkscape:version='0.47 r22583' height='16' sodipodi:docname='system-file-manager-symbolic.svg' xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:rdf='http://www.w3.org/1999/02/22-rdf-syntax-ns#' xmlns='http://www.w3.org/2000/svg' width='16'>
+  <metadata id='metadata90'>
+    <rdf:RDF>
+      <cc:Work rdf:about=''>
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type rdf:resource='http://purl.org/dc/dcmitype/StillImage'/>
+        <dc:title>Gnome Symbolic Icon Theme</dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <sodipodi:namedview inkscape:object-paths='true' inkscape:cy='-218.16054' inkscape:current-layer='layer11' inkscape:window-width='1920' pagecolor='#555753' showborder='false' showguides='true' inkscape:snap-nodes='false' objecttolerance='10' showgrid='true' inkscape:object-nodes='true' inkscape:pageshadow='2' inkscape:guide-bbox='true' inkscape:window-x='0' inkscape:snap-bbox='true' bordercolor='#666666' id='namedview88' inkscape:window-maximized='1' inkscape:snap-global='true' inkscape:window-y='26' gridtolerance='10' inkscape:zoom='1' inkscape:window-height='1021' borderopacity='1' guidetolerance='10' inkscape:snap-bbox-midpoints='false' inkscape:cx='-144.56708' inkscape:bbox-paths='false' inkscape:snap-grids='true' inkscape:pageopacity='1' inkscape:snap-to-guides='true'>
+    <inkscape:grid visible='true' spacingx='1px' type='xygrid' spacingy='1px' id='grid4866' empspacing='2' enabled='true' snapvisiblegridlinesonly='true'/>
+  </sodipodi:namedview>
+  <title id='title9167'>Gnome Symbolic Icon Theme</title>
+  <defs id='defs7386'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer9' inkscape:label='status' style='display:inline'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer10' inkscape:label='devices'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer11' inkscape:label='apps'>
+    
+    <path inkscape:connector-curvature='0' d='M 205.1875,490 C 203.98238,490 203,491.01795 203,492.21875 l 0,11.5625 c 0,1.2008 0.98238,2.21875 2.1875,2.21875 l 9.625,0 c 1.20512,0 2.1875,-1.01795 2.1875,-2.21875 l 0,-11.5625 C 217,491.01795 216.01762,490 214.8125,490 l -9.625,0 z m -0.1875,3 10,0 0,11 -10,0 0,-11 z m 1,1 0,4 8.03125,0 0,-4 L 206,494 z m 2.34375,1.4375 a 0.50004997,0.50004997 0 0 1 0.0625,0 0.50004997,0.50004997 0 0 1 0.59375,0.5 l 0,0.0625 2,0 0,-0.0625 a 0.50004997,0.50004997 0 1 1 1,0 L 212,496 c 0,0.54535 -0.45465,1 -1,1 l -2,0 c -0.54535,0 -1,-0.45465 -1,-1 l 0,-0.0625 a 0.50004997,0.50004997 0 0 1 0.34375,-0.5 z m -2.3125,3.5625 0,4 8.03125,0 0,-4 -8.03125,0 z m 2.3125,1.4375 a 0.50004997,0.50004997 0 0 1 0.0625,0 0.50004997,0.50004997 0 0 1 0.59375,0.5 l 0,0.0625 2,0 0,-0.0625 a 0.50004997,0.50004997 0 1 1 1,0 L 212,501 c 0,0.54535 -0.45465,1 -1,1 l -2,0 c -0.54535,0 -1,-0.45465 -1,-1 l 0,-0.0625 a 0.50004997,0.50004997 0 0 1 0.34375,-0.5 z' id='rect11668-7' style='color:#000000;fill:#bebebe;fill-opacity:1;fill-rule:evenodd;stroke:none;stroke-width:1;marker:none;visibility:visible;display:inline;overflow:visible;enable-background:accumulate'/>
+  </g>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer12' inkscape:label='actions'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer13' inkscape:label='places'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer14' inkscape:label='mimetypes'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='layer15' inkscape:label='emblems' style='display:inline'/>
+  <g transform='translate(-202.0002,-490)' inkscape:groupmode='layer' id='g4953' inkscape:label='categories' style='display:inline'/>
+</svg>

data/org.gnome.Nautilus.desktop.in

@@ -5,7 +5,7 @@ Comment=Access and organize files
 Keywords=folder;manager;explore;disk;filesystem;
 Exec=nautilus --new-window %U
 # Translators: Do NOT translate or transliterate this text (this is an icon file name)!
-Icon=system-file-manager
+Icon=org.gnome.Nautilus
 Terminal=false
 Type=Application
 DBusActivatable=true