Re: RFR (S) CR 8014966: Add the proper Javadoc to @Contended

[Martin Buchholz]

Looks good enough to me for a non-public API.  I expect more contentious
arguments if this is ever made public, since the problems remain very
tricky.  Only a VM that monitors memory "hot spots" can really get this
right ... but the VM we have is already named "hotspot" ...