tests/test-pull-r.out

commands: optional options where possible

This makes life a lot easier on API users.

changeset:   2:effea6de0384
tag:         tip
parent:      0:bbd179dfa0a7
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     add bar

changeset:   1:ed1b79f46b9a
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     change foo

changeset:   0:bbd179dfa0a7
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     add foo

% pull a missing revision
abort: unknown revision 'missing'!
% pull -r 0
changeset:   0:bbd179dfa0a7
tag:         tip
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     add foo

% pull -r 1
changeset:   1:ed1b79f46b9a
tag:         tip
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     change foo

changeset:   0:bbd179dfa0a7
user:        test
date:        Thu Jan 01 00:00:00 1970 +0000
summary:     add foo

% pull -r 1 again