Fixing regression in 2.0.2 that RedeployPublisher would delete artifacts from the build after running.
Also generally improving backward compatibility for 1.x → 2.0:
when using a StandardArtifactManager, File’s directly in the artifacts dir are used as is;
otherwise they are copied to temporary files iff someone needs them that way,
and Closeable is used to clean up (which will look nicer when -source 7 is available).
Conflicts:
	src/main/java/hudson/maven/reporters/MavenArtifactRecord.java