hg: jdk/sandbox: 8210810: Escaped character at specific position in argument file is not handled properly

[chris.hegarty at oracle.com]

Changeset: 53a4760e9fcc
Author:    henryjen
Date:      2018-09-28 13:15 -0700
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/53a4760e9fcc

8210810: Escaped character at specific position in argument file is not handled properly
Reviewed-by: alanb
Contributed-by: Bo Zhang <zhangbodut at gmail.com>

! src/java.base/share/native/libjli/args.c
! test/jdk/tools/launcher/ArgFileSyntax.java