IN PROGRESS - BATCH-863: introduce LineMapper interface to encapsulate string-to-item mapping

minor property rename

spring-batch-infrastructure/src/main/java/org/springframework/batch/item/file/mapping/DefaultLineMapper.java

@@ -20,7 +20,7 @@ public class DefaultLineMapper<T> implements LineMapper<T> {
 		return fieldSetMapper.process(tokenizer.process(line));
 	}
 
-	public void setTokenizer(LineTokenizer tokenizer) {
+	public void setLineTokenizer(LineTokenizer tokenizer) {
 		this.tokenizer = tokenizer;
 	}