Description: Fixes a build failure with Java 8
Origin: upstream, https://svn.apache.org/r1575563
--- a/src/java/org/apache/poi/ss/util/DateFormatConverter.java
+++ b/src/java/org/apache/poi/ss/util/DateFormatConverter.java
@@ -322,6 +322,9 @@
 		result.put( "ga_ie", "[$-83C]" );
 		result.put( "in", "[$-0421]" );
 		result.put( "iw", "[$-40D]" );
+
+		// JDK 8 adds an empty locale-string, see also https://issues.apache.org/jira/browse/LANG-941
+		result.put( "", "[$-0409]" );
 		
 		return result;
 	}