localrepo: remove cache code now handled by _prestatus
This patch removes the last of the 'working' variable that was sprinkled
throughout localrepo.status which paves the way for future patches to use the
object oriented design of contexts to handle calculating the status.
Mercurial
=========
Mercurial is a fast, easy to use, distributed revision control tool
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Basic install:
$ make # see install targets
$ make install # do a system-wide install
$ hg debuginstall # sanity-check setup
$ hg # see help
Running without installing:
$ make local # build for inplace usage
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See http://mercurial.selenic.com/ for detailed installation
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