tests/test-rebase-conflicts.out

tests: fix bashism to load helpers.sh

`source` isn't available at POSIX sh.

1 files updated, 0 files merged, 0 files removed, 0 files unresolved
created new head
@  5: L3
|
o  4: L2
|
o  3: L1
|
| o  2: C3
|/
o  1: C2
|
o  0: C1


% Try to call --continue
abort: no rebase in progress

% Conflicting rebase
merging common
warning: conflicts during merge.
merging common failed!
abort: fix unresolved conflicts with hg resolve then run hg rebase --continue

% Try to continue without solving the conflict
abort: unresolved merge conflicts (see hg resolve)

% Conclude rebase
saved backup bundle to 
@  5: L3
|
o  4: L2
|
o  3: L1
|
o  2: C3
|
o  1: C2
|
o  0: C1


% Check correctness
  - Rev. 0
c1
  - Rev. 1
c1
c2
  - Rev. 2
c1
c2
c3
  - Rev. 3
c1
c2
c3
  - Rev. 4
resolved merge
  - Rev. 5
resolved merge