util.*matcher: change default "names" argument names=['.'] means "include (recursively) only files from the current subdir"; the function then did a hack to walk the whole tree. Clean that up. This also fixes a problem where "--include ." works in a subdir, but not on the tree root.

<table class="slogEntry parity#parity#">
 <tr>
  <td class="age">#date|age#</td>
  <td class="author">#author|obfuscate#</td>
  <td class="node"><a href="?cs=#node|short#">#desc|strip|firstline|escape#</a></td>
 </tr>
</table>