Revert "Remove obsolete comment."

This reverts commit 91c30237317a31cfc56224ce63e34636add62c0c.
diff --git a/src/main/java/org/apache/commons/dbcp2/BasicDataSource.java b/src/main/java/org/apache/commons/dbcp2/BasicDataSource.java
index 28698ac..093aab7 100644
--- a/src/main/java/org/apache/commons/dbcp2/BasicDataSource.java
+++ b/src/main/java/org/apache/commons/dbcp2/BasicDataSource.java
@@ -76,6 +76,8 @@
 
     private static final Log log = LogFactory.getLog(BasicDataSource.class);
 
+    // ------------------------------------------------------------- Properties
+
     static {
         // Attempt to prevent deadlocks - see DBCP - 272
         DriverManager.getDrivers();