Manifest.mf in rpm doesn't contain version information.

rpm:
Created-By: Apache Maven
> Built-By: mockbuild
> Build-Jdk: 1.6.0_30
> Implementation-Title: JBoss Security Implementation for the JBAS
> Implementation-URL: http://labs.jboss.org/portal/jbosssecurity/
> Implementation-Vendor: Red Hat Middleware LLC
> Implementation-VendorId: org.jboss.security
> Implementation-Version: 2.0.8.Final
> Specification-Title: JBoss Security Implementation for the JBAS
> Specification-Vendor: Red Hat Middleware LLC
> Specification-Version: 2.0.8.Final

zip:
Created-By: 20.6-b01 (Sun Microsystems Inc.)