Bug 454112 - What is "horizontally" in split editor horizontally?

Added icons to show what the menu will do (renamed those from junit)

Change-Id: I6f1c6436b97c0cc7960230aa81371e041e45adf6
Signed-off-by: Andrey Loskutov <loskutov@gmx.de>
diff --git a/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_horizontal.png b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_horizontal.png
new file mode 100644
index 0000000..07baf51
--- /dev/null
+++ b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_horizontal.png
Binary files differ
diff --git a/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_horizontal@2x.png b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_horizontal@2x.png
new file mode 100644
index 0000000..62e0a37
--- /dev/null
+++ b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_horizontal@2x.png
Binary files differ
diff --git a/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_vertical.png b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_vertical.png
new file mode 100644
index 0000000..ca46028
--- /dev/null
+++ b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_vertical.png
Binary files differ
diff --git a/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_vertical@2x.png b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_vertical@2x.png
new file mode 100644
index 0000000..217f856
--- /dev/null
+++ b/bundles/org.eclipse.ui.ide.application/icons/full/elcl16/split_vertical@2x.png
Binary files differ
diff --git a/bundles/org.eclipse.ui.ide.application/plugin.xml b/bundles/org.eclipse.ui.ide.application/plugin.xml
index 9ebac42..30545df 100644
--- a/bundles/org.eclipse.ui.ide.application/plugin.xml
+++ b/bundles/org.eclipse.ui.ide.application/plugin.xml
@@ -95,6 +95,7 @@
                mnemonic="%menu.editor.mnemonic">
             <command
                   commandId="org.eclipse.ui.window.splitEditor"
+                  icon="icons/full/elcl16/split_horizontal.png"
                   mnemonic="%command.split.horizontal.mnemonic"
                   style="push">
                <parameter
@@ -104,6 +105,7 @@
             </command>
             <command
                   commandId="org.eclipse.ui.window.splitEditor"
+                  icon="icons/full/elcl16/split_vertical.png"
                   mnemonic="%command.split.vertical.mnemonic"
                   style="push">
                <parameter