This has been removed for several reasons:
* the framework does not know where the document root is and should not care
* as the document root was static, it was impossible to have several document roots depending on some business rules (see next one)
* sometimes, the document root is not under the web root directory (so the logic of getWebPath() is not always correct)
* the feature was not used anywhere in the core
* igorw/ipv6:
[HttpFoundation] minor optimization
minor adjustments suggested by vicb
[HttpFoundation] IPv6 support for RequestMatcher
[HttpFoundation] refactor RequestMatcherTest to use dataProvider
[Validator] use full iPv6 regex
[Validator] add IPv6 support to UrlValidator
[HttpFoundation] add IPv6 support to Request
[HttpFoundation] test Request::create with an IP as host name
[HttpFoundation] refactor Request::getClientIp test
* bschussek/form:
[Form] Automatically setting "data_class" option if objects are passed at the creation of a form
[Form] Improved the way passed data is handled in FormFactory
[Form] Simplified FileType code
[HttpFoundation] TemporaryStorage automatically creates the directory if it doesn't exist yet
[Form] Changed FormBuilder::build() to FormBuilder::create(). You hvae to pass the resulting builder to FormBuilder::add() manually now
[Form] Added FieldTypeValidatorExtension and fixed FQCN of DelegatingValidator
* lsmith77/request_format_tweaks:
added text/html to default format mapping
return "q" from splitHttpAcceptHeader() to enable more complex accept header negotiations
added support for setting a custom default format in Request::getRequestFormat()
* made the options array only for "global" options that are valid for all session storages
* changed the PDO session storage constructor signature to accept an array of options for DB configuration
* changed the storage_id to be the full service id, instead of just part of it
* removed the class parameter for session as it can be changed via the .class parameter (it was the only example in the framework)
* removed the configuration for the PDO session storage for now
* Funsational/master:
Update PDO session storage to check if any rows are updated when doing a session write. If no rows are udpated when performing a session write it generally means that we have created a new session id somewhere and we have not inserted into the database. This is the case for when calling regenerate_session_id() from the native session storage class. It will update the session id then call sessionWrite() to save the session but since the new session id does not exist in the DB, no rows are updated and any new session attributes such as security tokens are lost.
