Rename most device icons to comply with XDG standards

(cherry picked from commit 9f93d0db55)

plugin/simplestyle.cpp

@@ -446,19 +446,19 @@ QIcon Qt4TDEStyle::standardIconImplementation(StandardPixmap standardIcon, const
 			retswitch = 3;
 			break;
 		case QStyle::SP_DriveFDIcon:
-			iconLookupName = "3floppy_unmount";
+			iconLookupName = "media-floppy-3_5";
 			retswitch = 3;
 			break;
 		case QStyle::SP_DriveHDIcon:
-			iconLookupName = "hdd_unmount";
+			iconLookupName = "drive-harddisk";
 			retswitch = 3;
 			break;
 		case QStyle::SP_DriveCDIcon:
-			iconLookupName = "cdrom_unmount";
+			iconLookupName = "media-optical-cdrom";
 			retswitch = 3;
 			break;
 		case QStyle::SP_DriveDVDIcon:
-			iconLookupName = "dvd_unmount";
+			iconLookupName = "media-optical-dvd";
 			retswitch = 3;
 			break;
 // 		case QStyle::SP_DriveNetIcon: