Update CRLF to be easier to read.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1397562 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/main/java/org/apache/commons/csv/Constants.java

@@ -41,7 +41,7 @@ class Constants {
     static final int UNDEFINED = -2;
 
     /** According to RFC 4180, line breaks are delimited by CRLF */
-    public static final String CRLF = EMPTY + CR + LF;
+    public static final String CRLF = "\r\n";