A recent twitter post has the Star Citizen rumor mill all abuzz (and no, we don't mean the asset leak stuff everyone is talking about). Mark Hamillrecently posted a message stating he had returned to England for a tantalizing non-Star-Wars project. Mark Hamill engaging in a secret project on its own isn't necessarily huge news. Often, actors are restricted by NDA from disclosing movies they are working on until the studio is ready to reveal them. However, when combined with the fact that Chris …