[Form] Fixed: submit() reacts to dynamic modifications of the form children
Merge branch 'form-submit-2.2' into form-submit-2.3

Conflicts:
	src/Symfony/Component/Form/Form.php
	src/Symfony/Component/Form/Tests/AbstractFormTest.php
	src/Symfony/Component/Form/Tests/CompoundFormTest.php
	src/Symfony/Component/Form/Util/VirtualFormAwareIterator.php
[Form] Removed superfluous reset() call
[Form] PropertyPathMapper::mapDataToForms() *always* calls setData() on every child to ensure
that all *_DATA events were fired when the initialization phase is over (except for virtual forms)
Merge branch 'form-submit-2.2' into form-submit-2.3

Conflicts:
	src/Symfony/Component/Form/Extension/Core/DataMapper/PropertyPathMapper.php
[Form] Removed call to deprecated method
[Form] Removed exception in Button::setData(): setData() is now always called for all elements in the
form tree during the initialization of the tree
[Form] Added a test that ensures that setData() reacts to dynamic modifications of a form's children
Merge branch 'form-submit-2.3'