+ Builder: ADD of a local file will detect tar archives and unpack them
	into the container instead of copying them as a regular file.

* Builder: ADD uses tar/untar for copies instead of calling 'cp -ar'.
	This is more consistent, reduces the number of dependencies, and
	fixe #896.
add port redirection doc
Added content to port redirect doc
Typo
Merge pull request #897 from dotcloud/fix-overlapping-add

* Builder: ADD improvements: use tar for copy + automatically unpack local archives
Merge pull request #911 from dotcloud/add_port_redirection_doc

* Documentation: add port redirection doc
Merge branch 'master' into builder_server-3

Conflicts:
	buildfile_test.go