Log Message:
Update to 1.9.3:

This is a regular bugfix release.

    setup: build inotify for sys.platform='linux*'
    bundlerepo: add argument check before unlink
    hgweb: properly check for bookmarks when drawing graph
    http: handle push of bundles > 2 GB again (issue3017)
    keyword: preserve file mode when overwriting
    osutil: avoid accidentally destroying the True object in isgui (issue2937)
    patch: correctly handle non-tabular Subject: line
    patch: handle 'gitpatches' being empty, but not none
    record: use command wrapper properly for qnew/qrefresh (issue3001)
    setdiscovery: fix hang when #heads>200 (issue2971)
    ui: also swap sys.stdout with self.fout in _readline
    ui: write traceback to self.ferr
    url: Remove the proxy env variables only when needed (issue2451)
    url: parse fragments first (issue2997)
    util: fix crash converting an invalid future date to string
    util: wrap lines with multi-byte characters correctly (issue2943)