add holo light icons

OpenPGP-Keychain/res/menu/key_list_public.xml

@@ -4,6 +4,7 @@
     <item
         android:id="@+id/menu_key_list_public_import"
         android:showAsAction="always|withText"
+        android:icon="@drawable/ic_action_add_person"
         android:title="@string/menu_import"/>
     <item
         android:id="@+id/menu_key_list_public_export"

OpenPGP-Keychain/res/menu/key_list_public_multi.xml

@@ -6,7 +6,7 @@
         android:title="@string/menu_encrypt_to"/>
     <item
         android:id="@+id/menu_key_list_public_multi_delete"
-        android:icon="@android:drawable/ic_menu_delete"
+        android:icon="@drawable/ic_action_discard"
         android:title="@string/menu_delete_key"/>
 
 </menu>

OpenPGP-Keychain/res/menu/key_view.xml

@@ -3,7 +3,7 @@
 
     <item
         android:id="@+id/menu_key_view_share"
-        android:icon="@android:drawable/ic_menu_share"
+        android:icon="@drawable/ic_action_share"
         android:showAsAction="always"
         android:title="@string/menu_share">
         <menu>
@@ -27,7 +27,7 @@
     </item>
     <item
         android:id="@+id/menu_key_keyserver"
-        android:icon="@android:drawable/ic_menu_upload"
+        android:icon="@drawable/ic_action_import_export"
         android:showAsAction="always"
         android:title="@string/menu_share">
         <menu>
@@ -43,7 +43,7 @@
     </item>
     <item
         android:id="@+id/menu_key_view_sign"
-        android:showAsAction="never"
+        android:showAsAction="ifRoom"
         android:title="@string/menu_sign_key"/>
     <item
         android:id="@+id/menu_key_view_export_file"

README.md

@@ -245,5 +245,8 @@ Some parts (older parts and some libraries are Apache License v2, MIT X11 Licens
 * key.svg  
   http://rrze-icon-set.berlios.de/  
   Creative Commons Attribution Share-Alike licence 3.0
+  
+* Menu icons  
+  http://developer.android.com/design/downloads/index.html#action-bar-icon-pack