[jdk11u] RFR: 8277795: ldap connection timeout not honoured under contention

[Goetz Lindenmaier]

On Fri, 4 Mar 2022 13:23:20 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> I backport this for parity with 11.0.15-oracle.
> 
> I had to resolve the second hunk to Connections.java due to conflicts.
> Final and private keywords are swapped in 18.
> I had to adapt the spelling of a message in the test. 11 does not 
> capitalize the sentence "connect timed out".

Mac pre-submit failure: Error. Agent error: java.lang.Exception: Agent 38 timed out
unrelated.
linux pre-submit failure: macroAssembler_x86.cpp  #  assert(false) failed: DEBUG MESSAGE: exception oop already set
Also unrelated.

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PR: https://git.openjdk.java.net/jdk11u/pull/29