(cherry picked from commit cf2b02dc)

Conflicts:
	changelog.html

(cherry picked from commit 87ab95e7)

Simplify code a bit using Collections.reverseOrder()

Conflicts:
	test/src/test/java/hudson/model/UpdateCenter2Test.java

My plan is to remove this in a while.

With the server-side download, the test needs to induce the update
center metadata retrieval in a separate manner.

Conflicts:
	pom.xml

Conflicts:
	core/src/main/java/hudson/PluginManager.java
	core/src/test/java/hudson/PluginManagerTest.java

[SECURITY-167] Plugin manager was also vulnerable to XXE attacks.

Although the plugiun manager was vulnerable getting information
out of Jenkins was harder - however it would still be possible to
do bad things such as reading from /dev/zero on Linux

update Japanese localization

Fix a display issue with the French locale

 add readme.md file for opensuse install

[JENKINS-4409] Disable URLConnection.useCache in tests on Windows

NPE from ArtifactArchiver.getAllowEmptyArchive