tests/test-copy-move-merge.out

Fix --blacklist when --jobs > 1 in run_tests.py.

The options parsing logic replaces the options.blacklist initial value,
a list of filenames, with a dict of test names to filenames.  When
runchildren rebuilds the command line to launch child processes the dict
is flattened and provided as a malformed argument when a filename is
expected.

Fix is to remove the blacklist option from child invocations since the
filtering is handled in the parent anyway.

1 files updated, 0 files merged, 2 files removed, 0 files unresolved
  searching for copies back to rev 1
  unmatched files in other:
   b
   c
  all copies found (* = to merge, ! = divergent):
   c -> a *
   b -> a *
  checking for directory renames
resolving manifests
 overwrite None partial False
 ancestor 583c7b748052 local fb3948d97f07+ remote 7f1309517659
 a: remote moved to c -> m
 a: remote moved to b -> m
preserving a for resolve of b
preserving a for resolve of c
removing a
update: a 1/2 files (50.00%)
picked tool 'internal:merge' for b (binary False symlink False)
merging a and b to b
my b@fb3948d97f07+ other b@7f1309517659 ancestor a@583c7b748052
 premerge successful
update: a 2/2 files (100.00%)
picked tool 'internal:merge' for c (binary False symlink False)
merging a and c to c
my c@fb3948d97f07+ other c@7f1309517659 ancestor a@583c7b748052
 premerge successful
0 files updated, 2 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
-- b --
0
1
2
-- c --
0
1
2