RFR: JDK-8227124: "could not open pipe" error does not report error details

[Alex Menkov]

Hi all,

Please review a fix for
https://bugs.openjdk.java.net/browse/JDK-8227124

This is subtask of JDK-8221512: Failed to complete jcmd operation 
'[error][attach] could not open pipe \\.\pipe\javatool-708501419 to send 
result of operation jcmd'

To fix issues with "could  not open pipe" error, additional info is 
required, the change adds logging of system error.

webrev:
http://cr.openjdk.java.net/~amenkov/jdk14/openPipeErrorLog/webrev/

--alex