hg: build-infra/jdk8: Use LC_ALL=C instead of LANG=C because the latter does not change LC_MESSAGES,

[fredrik.ohrstrom at oracle.com]

Changeset: 4a20cf7d74bb
Author:    ohrstrom
Date:      2013-01-10 09:10 +0100
URL:       http://hg.openjdk.java.net/build-infra/jdk8/rev/4a20cf7d74bb

Use LC_ALL=C instead of LANG=C because the latter does not change LC_MESSAGES,
which is necessary if we are grepping for english words in the output from diff.

! common/bin/compare.sh