fetch: fix newheads calculation (
issue2047)
Make annotate --follow an alias for -f/--file to behave like in older versions
Since
98a0421b9e52 annotate follows copies/renames by default, but the output
of e.g. "annotate --follow --number" should not change without some
deprecation time.
store: only add new entries to the fncache file
Newly added fncache entries were not added to the in-memory cache,
making it possible for 'hg convert' to cause duplicates in
.hg/store/fncache.
Duplicates in the fncache file are harmless, but excessive numbers
of duplicates from large converted repositories may slow down
execution speed considerably.