Merge pull request voldemort#169 from jameswu0629/bdb-conversion-0.9x…

…-1.6.x

Changed setReadOnly(true) -> setReadOnly(false) to prevent writing file summary fail when during bdb5 conversion

src/java/voldemort/store/bdb/dataconversion/AbstractBdbConversion.java

@@ -41,7 +41,7 @@ public abstract class AbstractBdbConversion {
         EnvironmentConfig envConfig = new EnvironmentConfig();
         envConfig.setTransactional(true);
         envConfig.setAllowCreate(false);
-        envConfig.setReadOnly(true);
+        envConfig.setReadOnly(false);
         envConfig.setCacheSize(1024 * 1024 * 1024);
 
         DatabaseConfig dbConfig = new DatabaseConfig();