Utils: HighDPI-able, themable filenew and open icons

Change-Id: I1b9dc3393c6ec7965fbca42a561303ddc01201eb
Reviewed-by: Alessandro Portale <alessandro.portale@qt.io>

src/libs/utils/utils.qrc

@@ -45,7 +45,9 @@
         <file>images/editpaste@2x.png</file>
         <file>images/empty14.png</file>
         <file>images/filenew.png</file>
+        <file>images/filenew@2x.png</file>
         <file>images/fileopen.png</file>
+        <file>images/fileopen@2x.png</file>
         <file>images/filesave.png</file>
         <file>images/filesave@2x.png</file>
         <file>images/inputfield.png</file>

src/libs/utils/utilsicons.cpp

@@ -64,10 +64,10 @@ const Icon BOOKMARK_TOOLBAR({
 const Icon BOOKMARK_TEXTEDITOR({
         {QLatin1String(":/utils/images/bookmark.png"), Theme::Bookmarks_TextMarkColor}}, Icon::Tint);
 
-const Icon NEWFILE(
+const Icon NEWFILE({
-        QLatin1String(":/utils/images/filenew.png"));
+        {QLatin1String(":/utils/images/filenew.png"), Theme::PanelTextColorMid}}, Icon::Tint);
-const Icon OPENFILE(
+const Icon OPENFILE({
-        QLatin1String(":/utils/images/fileopen.png"));
+        {QLatin1String(":/utils/images/fileopen.png"), Theme::PanelTextColorMid}}, Icon::Tint);
 const Icon SAVEFILE({
         {QLatin1String(":/utils/images/filesave.png"), Theme::PanelTextColorMid}}, Icon::Tint);
 const Icon SAVEFILE_TOOLBAR({

src/tools/icons/qtcreatoricons.svg

@@ -3585,6 +3585,54 @@
          width="100%"
          height="100%" />
     </g>
+    <g
+       transform="translate(80,0)"
+       style="display:inline"
+       id="src/libs/utils/images/filenew">
+      <rect
+         style="fill:#ffffff;fill-opacity:1"
+         x="1228"
+         y="568"
+         width="16"
+         height="16"
+         id="rect6782-96-0-0-7-8-1-0-4-0-1" />
+      <path
+         style="fill:#ffffff;stroke:#000000"
+         d="m 1231.5,569.5 6,0 3,3 0,10 -9,0 z"
+         id="path5168-9"
+         inkscape:connector-curvature="0"
+         sodipodi:nodetypes="cccccc" />
+      <path
+         style="fill:none;stroke:#000000"
+         d="m 1237.5,569.5 0,3 3,0"
+         id="path5172-7"
+         inkscape:connector-curvature="0"
+         sodipodi:nodetypes="ccc" />
+    </g>
+    <g
+       transform="translate(96,0)"
+       style="display:inline"
+       id="src/libs/utils/images/fileopen">
+      <rect
+         style="fill:#ffffff;fill-opacity:1"
+         x="1228"
+         y="568"
+         width="16"
+         height="16"
+         id="rect6782-96-0-0-7-8-1-0-4-0-1-7" />
+      <path
+         style="fill:#ffffff;stroke:#000000"
+         d="m 1241.5,575.5 0,-3 -6,0 -1,-1 -4,0 0,10 11,0 1.7031,-6 -10.5,0 -2.035,5.70381"
+         id="polygon4927-6-0"
+         inkscape:connector-curvature="0"
+         sodipodi:nodetypes="cccccccccc" />
+      <path
+         style="fill:none;stroke:#ffffff"
+         d="m 1231.5,576 0,4.5 2.5,0"
+         id="path6121"
+         inkscape:connector-curvature="0"
+         sodipodi:nodetypes="ccc" />
+    </g>
   </g>
   <g
      inkscape:groupmode="layer"