The call of \OC_MAIL::send() overrides all optional parameters. This is not necessary. But if you want to have html mail templates (what I'm thinking about) it is a real problem

Conflicts:
	lib/files/storage/temporary.php

Required by several applications like our pdf viewer

in case file based session handling in enabled - we need to make sure the configured folder is writable

we get best results regarding mime type detection if we use fileinfo - let's tell the admin about that

Ensure we can find basic owncloud classes while detecting the owncloud
paths in function initPaths by add OC::$SERVERROOT . '/lib' to include
path before any owncloud function is called.

This fix a bug with XAMPP that cannot find the class OC_Config in
function OC_Request::scriptName when called from function
OC_Base::initPaths.

Add support for a reverse proxy that only forwards SSL connections
unencrypted to the web server.

This patch allows to detect the reverse proxy via regular expression for
the remote IP address and conditional overwrite the host name, protocol
and web root.

Add support for a reverse proxy that handles multiple domains via different
web roots (http[s]://proxy.tld/domain.tld/owncloud).

As the reverse proxy web root is transparent for the web server the
REQUEST_URI and SCRIPT_NAME need manual adjustments. This patch replace
the direct use of this _SERVER variables with function calls and extend
this functions to overwrite the web root. Additionally it adds a Sabre
request backend that extends the Sabre_HTTP_Request to use the same
functions.