Fix how setup.py identifies the Mercurial version.
There is a problem with setup.py where it will not identify the Mercurial
version properly when not being ran in within a repository even if
mercurial/__version__.py exists.
To fix, use mercurial.__version__.version when available before defaulting
to "unknown". (Using mercurial.util.version() is not an option due to a
dependency issue where osutil can be referenced before it is built.)
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
created new head
merging a
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0 files updated, 0 files merged, 0 files removed, 1 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg up --clean' to abandon
e7fe8eb3e180+0d24b7662d3e+ tip
<<<<<<< local
something else
=======
something
>>>>>>> other
M a
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