Do not assume that retention strategy descriptor display name functions as a verb.
Typo in Javadoc.
Misleading comment.
[FIXED JENKINS-18178] Reverting an inessential part of the fix of JENKINS-16301 since it broke some Maven builds.
Apparently the Maven 2 process factory fails to adequately insulate the Maven process from Jenkins library dependencies;
if you specify a build extension that can override dependencies used by Jenkins core classes!
A real fix would involve changing class loader delegation, since presumably similar bugs could still occur.
[[JENKINS-16301] Use a buffered input stream to get somewhat better performance also from Maven archiving.
Introducing Util.getDigestOf(File) as a convenience.