<config>
    <modules>
        <Magecomp_Recaptcha>
            <active>true</active>
            <codePool>local</codePool>
            <depends>
                <Mage_Page />
            </depends>
        </Magecomp_Recaptcha>
    </modules>
</config>

<?xml version="1.0" encoding="utf-8"?>
<config>
    <modules>
        <Magecomp_Recaptcha>
            <version>2.0.8</version>
        </Magecomp_Recaptcha>
    </modules>
    ...
    <frontend>
        <layout>
            <updates>
                <recaptcha>
                    <file>recaptcha.xml</file>
                </recaptcha>
            </updates>
        </layout>
    </frontend>
    ...

<default>
    ...

    <reference name="top.links">
        <action method="setTemplate">
            <template>page/template/top_links.phtml</template>
        </action>

        <block type="checkout/cart_sidebar" name="cart_sidebar" template="checkout/cart/mini_toplinks.phtml" before="-">
            <action method="addItemRender"><type>simple</type><block>checkout/cart_item_renderer</block><template>checkout/cart/sidebar/default.phtml</template></action>
            <action method="addItemRender"><type>grouped</type><block>checkout/cart_item_renderer_grouped</block><template>checkout/cart/sidebar/default.phtml</template></action>
            <action method="addItemRender"><type>configurable</type><block>checkout/cart_item_renderer_configurable</block><template>checkout/cart/sidebar/default.phtml</template></action>
            <block type="core/text_list" name="cart_sidebar.extra_actions" as="extra_actions" translate="label" module="checkout">
                <label>Shopping Cart Sidebar Extra Actions</label>
            </block>
        </block>
    </reference>

<?xml version="1.0"?>
<layout version="0.1.0">
    <default>
        <reference name="top.links">
            <!-- setTemplate does not work -->
            <action method="setTemplate">
                <template>recaptcha/page/template/top_links.phtml</template>
            </action>

            <!-- addLink works -->
            <action method="addLink" module="recaptcha">
                <label>Google</label>
                <title>Google</title>
                <url>www.google.de</url>
            </action>
        </reference>
    ...

<?xml version="1.0"?>
[...]
<codePool>local</codePool>
<depends>
    <Mage_Page />
</depends>
[...]

<?xml version="1.0"?>

<config>
    <modules>
        <WR_EPO>
            <version>1.0.0.7</version>
        </WR_EPO>
    </modules>
    <global>
        <blocks>
            <adminhtml>
                <rewrite>
                    <catalog_product_edit_tab_options_type_text>
                        WR_EPO_Block_Adminhtml_Block_Catalog_Product_Edit_Tab_Options_Type_Text
                    </catalog_product_edit_tab_options_type_text>
                </rewrite>
            </adminhtml>
        </blocks>
    </global>
...

class WR_EPO_Block_Adminhtml_Block_Catalog_Product_Edit_Tab_Options_Type_Text extends
    Mage_Adminhtml_Block_Catalog_Product_Edit_Tab_Options_Type_Text
{
    public function __construct()
    {
        parent::__construct();
        $this->setTemplate('wr/catalog/product/edit/options/type/text.phtml');
    }
}

<default>
    ...
</default>

<catalog_category_view>
</catalog_category_view>

<customer_logged_out>
</customer_logged_out>

etc...