log: slowpath: only walk specified revision range during preparation
Even with --removed, it does not make sense to examine changesets outside
of the revision range that was specified by the user: the last phase only
yields a subset of (revs), preparation phase hence only has to examine
(revs) to fill correctly fncache.
a -> a not a symlink
% test replacing a file with a symlink
a -> b
popping symlink.patch
now at: base.patch
applying symlink.patch
now at: symlink.patch
a -> b
% test updating a symlink
a -> c
popping updatelink
now at: symlink.patch
applying updatelink
patching file a
a
now at: updatelink
a -> c
% test replacing a symlink with a file
popping replacelinkwithfile
now at: addlink
applying replacelinkwithfile
now at: replacelinkwithfile
sss
% test symlink removal
popping removesl.patch
now at: replacelinkwithfile
applying removesl.patch
now at: removesl.patch
C b
C c
C s