Log Message:
Update to 2.0.2:

This is a regularly-scheduled bug-fix release.

    alias: shortcut command matching so shadowing works properly (issue3104)
    branch: warn on branching
    changelog: handle decoding of NULs in extra more carefully (issue3156)
    convert: improve exception reporting for SVN logstream
    diff: don't crash when diffing a revision with a deleted subrepo (issue3153)
    fetch: fix unneeded commit when no merge attempted (issue2847)
    fetch: patch cornercase in children calculation (issue2773)
    largefiles: copy files in binary mode (issue3164)
    largefiles: don't require a user cache (issue3088) (issue3155)
    largefiles: fix 'hg status' abort after merge
    largefiles: handle merges between normal files and largefiles (issue3084)
    merge: check filename case collision between changesets for branch merging
    pathauditor: switch normcase logic according to case sensitivity of filesystem
    progress: check for ui.quiet and ui.debugflag before we write
    rollback: always call destroyed() (regression from 1.9)
    util: fix url.str() for windows file URLs
    windows: use upper() instead of lower() or os.path.normcase()