hg: jdk9/hs-rt/hotspot: 8072694: Need errno info when CDS archive creation fails

[harold.seigel at oracle.com]

Changeset: 4a76ca542247
Author:    hseigel
Date:      2015-02-10 09:25 -0500
URL:       http://hg.openjdk.java.net/jdk9/hs-rt/hotspot/rev/4a76ca542247

8072694: Need errno info when CDS archive creation fails
Summary: Add errno output to error message when CDS archive creation fails
Reviewed-by: dholmes, lfoltan

! src/share/vm/memory/filemap.cpp