C/Changes - Update
C/t/25proto.t - minor rewrite

C/t/proto*.p files given their own package. (Avoids
'main::foo redefined' warnings.
C/t/proto1.p - now has its own package (PROTO1).

This eliminates 'main::foo redefined' warnings.
C/t/proto2.p - now has its own package (PROTO2).

This eliminates 'main::foo redefined' warnings.
C/t/proto3.p - now has its own package (PROTO3).

This eliminates 'main::foo redefined' warnings.
C/t/proto4.p - now has its own package (PROTO4).

This eliminates 'main::foo redefined' warnings.
C/t/proto5.p - now has its own package (PROTO5).

This eliminates 'main::foo redefined' warnings.
C/t/proto6.p - now has its own package (PROTO6).

This eliminates 'main::foo redefined' warnings.