Need a way to apply je.* properties to BdbjeCacheStore's EnvironmentConfig without using je.properties.

There are a number of Sleepycat-specific properties that I need to set in the EnvironmentConfig for BdbjeCacheStore, for example, "je.log.useODSYNC=true". Since we will have many different cache directories (one per customer), it becomes impractical to have use the je.properties file.

Since these properties would be the same for all cache instances, it makes sense for them to be in the cache server's config file. This might entail modifying the infinispan/default/loaders/loader/properties element to accomodate implementation-specific properties. Or, it could be done using a naming convention for the properties, for example, apply everything that starts with "je." to the BDBJE EnvironmentConfig.