Signer information does not match signer information of other classes in the same package

[lausdahl]

We have used java packages in a wrong way where we have mixed packages between jars.

Eg. the type checker has a package org.overture.ast.factory which is provided by the ast jar.

class "org.overture.ast.factory.AstFactoryTC"'s signer information does not match signer information of other classes in the same package

When the jars are signed it is no longer possible to load the org.overture.ast.factory.AstFactoryTC because its signature differs. Both files are singed by us using the same keystore.