Add a custom icon for the identify button

data/icons/scalable/Makefile.am

@@ -0,0 +1,3 @@
+iconsdir = $(datadir)/icons/hicolor/scalable/actions
+icons_DATA = xc_crosshair.svg
+EXTRA_DIST = $(icons_DATA)

data/icons/scalable/xc_crosshair.svg

@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   height="24"
+   width="24"
+   viewBox="0 0 24 24"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.91 r13725"
+   sodipodi:docname="xc_crosshair.svg">
+  <defs
+     id="defs8" />
+  <sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1214"
+     inkscape:window-height="720"
+     id="namedview6"
+     showgrid="true"
+     units="px"
+     inkscape:zoom="20.297462"
+     inkscape:cx="7.9553492"
+     inkscape:cy="11.672501"
+     inkscape:window-x="0"
+     inkscape:window-y="27"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="svg2">
+    <inkscape:grid
+       type="xygrid"
+       id="grid3230" />
+  </sodipodi:namedview>
+  <metadata
+     id="metadata4">
+    <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 />
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <path
+     inkscape:connector-curvature="0"
+     id="path3196"
+     d="m 11.5,22 0,-8"
+     style="fill:none;fill-rule:evenodd;stroke:#ffffff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;opacity:0.3" />
+  <path
+     style="fill:none;fill-rule:evenodd;stroke:#ffffff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;opacity:0.3"
+     d="m 11.5,13.000001 0,-8.0000006"
+     id="path3198"
+     inkscape:connector-curvature="0" />
+  <path
+     inkscape:connector-curvature="0"
+     id="path3200"
+     d="m 12,13.5 8,0"
+     style="fill:none;fill-rule:evenodd;stroke:#ffffff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;opacity:0.3" />
+  <path
+     style="fill:none;fill-rule:evenodd;stroke:#ffffff;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;opacity:0.3"
+     d="m 3,13.5 8,0"
+     id="path3202"
+     inkscape:connector-curvature="0" />
+  <path
+     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     d="m 11.5,21 0,-8"
+     id="path3232"
+     inkscape:connector-curvature="0" />
+  <path
+     inkscape:connector-curvature="0"
+     id="path3234"
+     d="m 11.5,12.000001 0,-8.0000006"
+     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
+  <path
+     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+     d="m 12,12.5 8,0"
+     id="path3236"
+     inkscape:connector-curvature="0" />
+  <path
+     inkscape:connector-curvature="0"
+     id="path3238"
+     d="m 3,12.5 8,0"
+     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
+</svg>