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.
% create source repository
adding a
adding b
% clone and pull to break links
requesting all changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 2 changes to 2 files
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
created new head
% relink
relinking .hg/store
collected 5 candidate storage files
not linkable: 00changelog.i
not linkable: 00manifest.i
not linkable: data/b.i
pruned down to 2 probably relinkable files
relinking: data/a.i 1/2 files (50.00%)
not linkable: data/dummy.i
relinked 1 files (136 bytes reclaimed)
% check hardlinks
repo/.hg/store/data/a.i == clone/.hg/store/data/a.i
repo/.hg/store/data/b.i != clone/.hg/store/data/b.i