CLONE -JarEntryHandler entryMap is not being refreshed

When a jar is modified, the entryMap of the JarEntryHandler is not being refreshed if its content has changed. For example, a jar META-INF directory to which files have been added/removed is not being refreshed. Need to create a testcase for this.

This issue was marked as fixed for beta12 as JBVFS-7, but these test failures in beta19 look to be the same issue:

Running org.jboss.test.virtual.test.JAREntryTestCase
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.148 sec <<< FAILURE!
Running org.jboss.test.virtual.test.CopyJAREntryTestCase
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.092 sec <<< FAILURE!
Running org.jboss.test.virtual.test.CopyJARCacheUnitTestCase
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.095 sec <<< FAILURE!
Running org.jboss.test.virtual.test.JARCacheUnitTestCase
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.096 sec <<< FAILURE!