Add check when locked thread has no owner, or if locked thread does not exist anymore.
Merge pull request #7 from christ66/ZD-20184

Add check when locked thread has no owner, or if locked thread does not ...
Avoiding getDisplayName methods.
I should not need to use Google Translate or grep Messages_fr.properties to find out that
“Garder cet esclave en ligne autant que possible” is really hudson.slaves.RetentionStrategy$Always!
Move node statistics into nodes.md, and split out job/container statistics into items.md.
Trying to avoid long, inline anonymous PrintedContent implementations.
[FIXED JENKINS-22609] Better summarize Item’s of all kinds.
Valid timestamps were being rejected, leading to improper build counts since 1.5.
[maven-release-plugin] prepare release support-core-2.14
[maven-release-plugin] prepare for next development iteration
Slow request was not properly displaying stack trace elements.
Print stack elements of initial thread.
Resolve file descriptor symlink.
Merge pull request #8 from christ66/resolFDSymLnk

Resolve file descriptor symlink.