Test EOF on zero-size files and reads on /proc
Test EOF on zero-size files and reads on /proc

Covers https://github.com/rakudo/rakudo/issues/1533 R#1533

Rakudo fix: https://github.com/MoarVM/MoarVM/commit/8d94732aad
            https://github.com/perl6/nqp/commit/43d4336974
            https://github.com/rakudo/rakudo/commit/af4dfe827c

dogbert17/roast,perl6/roast,dogbert17/roast