tests/test-hgwebdirsym.out

tests: fix bashism to load helpers.sh

`source` isn't available at POSIX sh.

adding a
adding b
adding c
% should succeed
200 Script output follows


/al/
/b/
/c/

200 Script output follows

a
200 Script output follows

b
200 Script output follows

c
% should fail
404 Not Found


error: repository circle not found
404 Not Found


error: repository circle not found
404 Not Found


error: repository circle not found
% collections errors