These two fields allow to specify a different default assignee for ticket opened against this package in bugzilla. Note: The EPEL field is always displayed for packages in the 'rpms' namespace regardless of whether it is used in bugzilla or not.
This package does not include the gnu texinfo documentation because this would conflict with the native gcc. If you've installed the native gcc, you can find the info documentation there, notice that this might be for a different version though!