This commit splits the i2p package into a second package, i2p-router.
* The new 'i2p-router' package does not depend on the java-wrapper nor jbigi.
Jbigi is recommended. This package can be installed on the ports or
distributions that the java-wrapper is not available for.
* The new 'i2p' package depends on i2p-router, libjbigi-jni, and the java-wrapper.
This package will add the i2psvc system user and the initscript. Existing
users of the i2p package will have the i2p-router package pulled in
automatically and for them there will be no usability changes.
Executive summary: No functionality changes will take place for either those
that installed the i2p package in the past or those that
install the newly split i2p package. For them, "The Song
Remains the Same."
