hg: jdk8/build/jdk: 7168208: Change use of @ in one sed command involving paths to different character

[kelly . ohair]

Changeset: c2d9166f3284
Author:    ihse
Date:      2012-05-11 08:21 -0700
URL:       http://hg.openjdk.java.net/jdk8/build/jdk/rev/c2d9166f3284

7168208: Change use of @ in one sed command involving paths to different 
character
Reviewed-by: ohair

! make/common/Release.gmk