Fix exec icon location and bring it into XDG compliance

diff --git a/src/dolphinsettingsdialog.cpp b/src/dolphinsettingsdialog.cpp
index dec4e32..04f87a3 100644
--- a/src/dolphinsettingsdialog.cpp
+++ b/src/dolphinsettingsdialog.cpp
@@ -32,7 +32,7 @@
 {
     TDEIconLoader iconLoader;
     TQFrame* generalSettingsFrame = addPage(i18n("General"), 0,
-                                                iconLoader.loadIcon("exec",
+                                                iconLoader.loadIcon("application-x-executable",
                                                                     TDEIcon::NoGroup,
                                                                     TDEIcon::SizeMedium));
     m_generalSettingsPage = new GeneralSettingsPage(generalSettingsFrame);
diff --git a/src/infosidebarpage.cpp b/src/infosidebarpage.cpp
index 5e20c5d..24cf65d 100644
--- a/src/infosidebarpage.cpp
+++ b/src/infosidebarpage.cpp
@@ -156,7 +156,7 @@
 
     if (m_multipleSelection) {
         TDEIconLoader iconLoader;
-        TQPixmap icon = iconLoader.loadIcon("exec",
+        TQPixmap icon = iconLoader.loadIcon("application-x-executable",
                                            TDEIcon::NoGroup,
                                            TDEIcon::SizeEnormous);
         m_preview->setPixmap(icon);