Add an "Edit this Block" link

Solution:

block.tpl.php:

if (user_access('administer blocks')) {
  print "<a href='/admin/build/block/configure/"
        . $block->module . "/" . $block->delta
        . "'>(edit this block)</a>";
}

<div class="block block-<? print $block->module?>" id="block-<?php print $block->module . "-" . $block->delta ?>">
<?php if ($block->subject) { ?>
<h2 class="title"><span><?php print $block->subject ?></span></h2>
<?php } ?>
  <div class="content"><?php print $block->content ?></div>
<?php if (user_access('administer blocks')) {
  print "<a href='" . "/admin/build/block/configure/" . $block->module . "/" . $block->delta . "'>(edit this block)</a>";
} ?>
</div>