bouncycastle bcmail jakarta version

bouncycastle.org is creating a new version of bcmail that will use jakarta
mail and activation APIs. The new jars will be posted to a public maven repo
sometime mid to late June.

Because of some code restructuring unrelated to jakarta an new JAR, bcutil.
must be used in conjunction with bcpkix. The org/bouncycastle/bcpkix/main/module.xml
will need to be updated as follows.

    <resources>    
        <resource-root path="bcpkix-SOME_VERSION.jar"/>      
        <resource-root path="bcutil-SOME_VERSION.jar"/>
    </resources

The proposed name of the jakarta base JAR is bcjmail, althought this might change.