* 'ldap_multi_server' of git://github.com/DvaSlona/dokuwiki:
  Config method changed from array to comma separated string.
  Allow multiple LDAP servers.

added farms to the core

as discussed at https://github.com/splitbrain/dokuwiki/pull/115

This changes the caching system to expire caches when the last modified time of
a dependency is equal to the cache file except for the meta file where the old
check is kept in order to avoid additional renderer calls and possible circular
dependencies. This avoids stale cache files but means that the parser and
renderer could now be called more than once after an edit but we currently
don't have a better fix for that.

consider empty files as no file in installer

This makes sure that the animal that is specified in the URL is actually
a subdirectory inside the farm and not somewhere else in the system.
This allows that the animals are organized in different subdirectories
for more complicated farm setups.

Now the animal can be specified in the animal environment variable.

* extracted most farm code into inc/farm.php
* by default farm.php is nowhere included
* added preload.php.dist as an example farm setup
* farm.php can be included in preload.php to activate farming

allow empty config file to proceed installation as we package default
config empty in first install

as packager may provide empty file in package, to ensure correct
file permissions.

import old patch:
http://cvs.pld-linux.org/packages/dokuwiki/install.patch

I hate using heights, but couldn't find any other way

same problem as in f1d7655b

string sanitization even for their own new actions

The used syntax was invalid in PHP < 3.4 and seemed to be wrong logical
as well.