ID#234: first implementation draft.
ID#234: second implementation draft.
ID#234: enhanced request implementation.
ID#234: added sample implementation (not yet finished; inconsistent!) using the request implementation.
Merge branch 'master' into feature-ID#234-http-impl
ID#234: enhanced request implementation.
ID#234: adapted form implementation to new request implementation model.
ID#234: further adaption of framework components to new request implementation model.
ID#234: bug fix for wrong parameter usage.
ID#234: allow configuration of application charset for response.
Corrected line separators.
Corrected line separators.
ID#234: re-implementation of the rewrite input filter with new Request interface.
Merge branch 'feature-ID#234-http-impl'

Conflicts:
	core/pagecontroller/BaseDocumentController.php
ID#234: refactoring of the Cookie compatibility mechanism.
ID#234: enhanced request implementation.
ID#234: switched to new Cookie implementation.