install instructions use unprefixed fedora image

Signed-off-by: Lokesh Mandvekar <lsm5@redhat.com>
Simplified and streamlined Amazon Quickstart

The amazon quickstart images are EBS backed and include cloudinit. I've personally tested these documentation changes as a new user to Docker.
Missing pipe in line 85
Merge pull request #3462 from tsaavik/patch-2

Simplified and streamlined Amazon Quickstart
Merge pull request #3483 from lukaspustina/patch-1

Missing redirect in line 85
Merge pull request #3430 from lsm5/fedora-official-image

install instructions use unprefixed fedora image
Fix ADD caching issue with . prefixed path

Docker-DCO-1.0-Signed-off-by: Guillaume J. Charmes <charmes.guillaume@gmail.com> (github: creack)
Make vfs error more explicit

Docker-DCO-1.0-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Fix issue with file caching + prevent wrong cache hit

Docker-DCO-1.0-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Revert "Add -S option to tar for efficient sparse file handling"

This reverts commit 733bf5d3ddbfb6dba7c2c0996c4af47a765e4593.

This is needed to fix "no such file" errors `docker build` errors for
devicemapper.

This fixes issue #3449.

Docker-DCO-1.0-Signed-off-by: Cristian Staretu <cristian.staretu@gmail.com> (github: unclejack)
Makes sure the GPG key fingerprint is inlined in the doc everywhere.

Instead of `curl $url | apt-get add -` use the ubuntu keyserver and a full
fingerprint to retreive the key. This makes the distribution of the GPG key
more secure an less likely to change even if 3rd party gains access to the
packages repository.

Docker-DCO-1.0-Signed-off-by: Jonas Pfenniger <zimbatm@zimbatm.com> (github: zimbatm)
Fixes key installation for other target urls in hack/install.sh

Docker-DCO-1.0-Signed-off-by: Jonas Pfenniger <zimbatm@zimbatm.com> (github: zimbatm)
Merge pull request #3492 from unclejack/3449-fix_docker_build_on_devicemapper

#3449 - fix `docker build` on devicemapper
Merge pull request #3474 from creack/fix_add_cache_issue

Fix ADD caching issue with . prefixed path
Merge pull request #3361 from zimbatm/gpg-key-secure-best

Makes sure the GPG fingerprint is inlined in the doc everywhere.
Disable compression for build. More space usage but much faster upload

Docker-DCO-1.0-Signed-off-by: Guillaume J. Charmes <guillaume.charmes@docker.com> (github: creack)
Bump to v0.7.4

Docker-DCO-1.0-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Merge pull request #3495 from crosbymichael/bump_v0.7.4

Bump v0.7.4
Merge branch 'release' into merege_release_v0.7.4

Docker-DCO-1.0-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)
Change version to v0.7.4-dev

Docker-DCO-1.0-Signed-off-by: Michael Crosby <michael@crosbymichael.com> (github: crosbymichael)