Description:
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When rendering <function> tags, a space is added before the anchor tag.
This was a deliberate choice (see comment below) but affects areas other
than the function/method synopsis.

The Package_PHP_XHTML::format_function() method says:
    // Leading space intional for methodname as phpdoc doesn't have a
    // space between <type> and the <methodname> in methodsynopsis

However, this affects other uses of <methodname> and <function> and is 
particularly noticeable when the function name is written in parentheses. 

Examples:

    mysql_pconnect:
    "for future use ( mysql_close() will not close links"

    mysqlnd.stats:
    "from COM_LIST_FIELD ( mysql_list_fields()) and the"

    ldap_control_paged_results:
    "sent by the server ( ldap_control_paged_result_response())."

The leading space should be removed. Instead, a space should be added
to the rendered HTML only where it is needed: after rendering the
<type>, before a <methodname>, in a <methodsynopsis>.