and help PHP garbage collection for PHP < 5.3

This changes the HTTP stream to blocking while writing to the stream
using select() to handle timeouts. Addtionally, wwriting is done in 4k
block now (as it is done with reading).

This is supposed to fix a problem with writing to a SSL stream that is
not quite ready.

Reading from the stream continues to be non-blocking as before.

Changes:
  * XML-RPC now correctly allows leading and trailing _
  * Error messages from XML-RPC are correct
  * MEDIA_UPLOAD_FINISH has a sixth param specifying the move function
  * Not having upload rights when using media_upload throws a msg

This patch makes the plugin manager not descend into symbolically linked
directories as this behaviour is not expected from a recursive delete.

Functionality changes:
  * deleteAttachment now triggers MEDIA_DELETE_FILE (closes FS#1568)
  * deletion success msg in mediamanager is correct, even when the ns dir
    was deleted
  * media_delete changed quite a bit

I also adjusted the coding style to match our other JS classes

As discussed on the mailing list [1] this patch replaces the
COMMON_PAGE_FROMTEMPLATE with a more flexible event to better intercept page
template use.

Plugin authors need to change their plugins. Details on the event are
available at [2]

[1] http://www.freelists.org/post/dokuwiki/COMMON-PAGE-FROMTEMPLATE-event
[2] http://www.dokuwiki.org/devel:event:common_pagetpl_load

When a <select> tag has the class "quickselect", this script will
automatically submit its parent form when the select value changes.
It also hides the submit button of the form.

This patch allows to use the placeholders in the search intro message that
will be replaced with the search term.

@SEARCH@ will be replaced with the search query
@QUERY@  will be replaced with the URL encoded search query for use in URL
         parameters

Please note that the replacement is don't on the XHTML *after* parsing and
rendering the intro wiki text. This means you can not use the query where
an ID would be expected.

Examples:

  This will work:
    [[http://www.google.com/search?q=@QUERY@|Google for @SEARCH@]].

  This will not work and will link to the page "search" instead:
    [[@SEARCH@|Your page]].

  You could use this instead:
    [[this>doku.php?id=@QUERY@|Your page]].

This patch supresses a warning in the adLDAP library when a password
change is attempted but fails due to the configured Active Directory
Password Policy. Instead of the error an Exception is thrown.

This change probably needs to be replicated in the user modification
function.

Patch sent to upstream.