People identified by name and e-mail when handling content

While working with Tom Mens (UMONS Software Engineering Lab) on GNOME repository analysis, and using CVSAnaly to extract git repositories, I realized that when parsing many repositories in the same database CVSAnaly matches people table entries using only the person's name. As consequence, if a person uses many e-mail addresses only one e-mail address is kept in the database. To solve the problem I wrote a small patch modifying how people are retrieved from the table during repository parsing. I hope you can accept this patch. Do not hesitate to contact me or Tom Mens if you need further information.