The Package Manager from Flow has been backported and integrated as
CMS Package Manager. This enables us to use full vendor namespaces for
extensions and brings us closer to a unified TYPO3 package format.

For more Details see: http://wiki.typo3.org/Blueprints/Packagemanager

Resolves: #47018
Releases: 6.2
Change-Id: I52abedaf470cebddb3553e37581021bf368380e6
Reviewed-on: https://review.typo3.org/19605
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn
Reviewed-by: Alexander Opitz
Reviewed-by: Sascha Egerer
Reviewed-by: Thomas Maroschik
Tested-by: Thomas Maroschik
Tested-by: Alexander Opitz
Reviewed-by: Ernesto Baschny
Tested-by: Ernesto Baschny