Update .deb version numbers to be more sane

Example output:
```console
root@906b21a861fb:/go/src/github.com/docker/docker# ./hack/make.sh binary ubuntu
bundles/1.4.1-dev already exists. Removing.

---> Making bundle: binary (in bundles/1.4.1-dev/binary)
Created binary: /go/src/github.com/docker/docker/bundles/1.4.1-dev/binary/docker-1.4.1-dev

---> Making bundle: ubuntu (in bundles/1.4.1-dev/ubuntu)
Created package {:path=>"lxc-docker-1.4.1-dev_1.4.1~dev~git20150128.182847.0.17e840a_amd64.deb"}
Created package {:path=>"lxc-docker_1.4.1~dev~git20150128.182847.0.17e840a_amd64.deb"}

```

As noted in a comment in the code here, this sums up the reasoning for this change: (which is how APT and reprepro compare versions)
```console
$ dpkg --compare-versions 1.5.0 gt 1.5.0~rc1 && echo true || echo false
true
$ dpkg --compare-versions 1.5.0~rc1 gt 1.5.0~git20150128.112847.17e840a && echo true || echo false
true
$ dpkg --compare-versions 1.5.0~git20150128.112847.17e840a gt 1.5.0~dev~git20150128.112847.17e840a && echo true || echo false
true
```

ie, `1.5.0` > `1.5.0~rc1` > `1.5.0~git20150128.112847.17e840a` > `1.5.0~dev~git20150128.112847.17e840a`

Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com>

project/make/ubuntu

@@ -2,11 +2,26 @@
 
 DEST=$1
 
-PKGVERSION="$VERSION"
-if [ -n "$(git status --porcelain)" ]; then
-	PKGVERSION="$PKGVERSION-$(date +%Y%m%d%H%M%S)-$GITCOMMIT"
+PKGVERSION="${VERSION//-/'~'}"
+# if we have a "-dev" suffix or have change in Git, let's make this package version more complex so it works better
+if [[ "$VERSION" == *-dev ]] || [ -n "$(git status --porcelain)" ]; then
+	GIT_UNIX="$(git log -1 --pretty='%at')"
+	GIT_DATE="$(date --date "@$GIT_UNIX" +'%Y%m%d.%H%M%S')"
+	GIT_COMMIT="$(git log -1 --pretty='%h')"
+	GIT_VERSION="git${GIT_DATE}.0.${GIT_COMMIT}"
+	# GIT_VERSION is now something like 'git20150128.112847.0.17e840a'
+	PKGVERSION="$PKGVERSION~$GIT_VERSION"
 fi
 
+# $ dpkg --compare-versions 1.5.0 gt 1.5.0~rc1 && echo true || echo false
+# true
+# $ dpkg --compare-versions 1.5.0~rc1 gt 1.5.0~git20150128.112847.17e840a && echo true || echo false
+# true
+# $ dpkg --compare-versions 1.5.0~git20150128.112847.17e840a gt 1.5.0~dev~git20150128.112847.17e840a && echo true || echo false
+# true
+
+# ie, 1.5.0 > 1.5.0~rc1 > 1.5.0~git20150128.112847.17e840a > 1.5.0~dev~git20150128.112847.17e840a
+
 PACKAGE_ARCHITECTURE="$(dpkg-architecture -qDEB_HOST_ARCH)"
 PACKAGE_URL="http://www.docker.com/"
 PACKAGE_MAINTAINER="support@docker.com"
@@ -124,7 +139,7 @@ EOF
 
 		# create lxc-docker-VERSION package
 		fpm -s dir -C $DIR \
-			--name lxc-docker-$VERSION --version $PKGVERSION \
+			--name lxc-docker-$VERSION --version "$PKGVERSION" \
 			--after-install $DEST/postinst \
 			--before-remove $DEST/prerm \
 			--after-remove $DEST/postrm \
@@ -157,7 +172,7 @@ EOF
 
 		# create empty lxc-docker wrapper package
 		fpm -s empty \
-			--name lxc-docker --version $PKGVERSION \
+			--name lxc-docker --version "$PKGVERSION" \
 			--architecture "$PACKAGE_ARCHITECTURE" \
 			--depends lxc-docker-$VERSION \
 			--description "$PACKAGE_DESCRIPTION" \