tests: add more wildcards to test-extdiff.t
This test has been flakey recently on Windows, but it appears to be the same
scenario as
88d4477ac4f6.
branchmap: prevent reading the file twice through different iterators
Otherwise, test-static-http.t breaks.
Differential Revision: https://phab.mercurial-scm.org/D6028
remotefilelog: fix format str, blobsize isn't always a #, can be "(missing)"
Differential Revision: https://phab.mercurial-scm.org/D6025
remotefilelog: do not specify an explicit version for repack
Differential Revision: https://phab.mercurial-scm.org/D6024