Log Message:
Update to to 1.6:

1.6 (2010-07-01)

   (This release makes a couple small behavior changes, be sure to read \ 
UpgradeNotes!)

  Core

     * addremove: optimize addremove -s100 by matching files by their SHA1 hashes
     * archive: auto-detect archive type by extension (issue2058)
     * commit: more friendly handling of new and closed named branches
     * hooks: provide pre- and post- hooks with parsed command line arguments
     * log: add --branch for filtering on named branch
     * log: add --stat for diffstat output
     * push: add --new-branch option to allow initial push of new branches
     * push: break infinite http recursion bug with Python 2.6.5 (issue2179)
     * rollback: add -n/--dry-run flag, report what's being rolled back
     * subrepo: various fixes
     * summary: report copies and renames and add subrepo status
     * tag: add -e/--edit option for modifying the commit message
     * revsets: introduce a powerful query language for specifying revisions, \ 
see the manpage or hg help revsets

  Hgweb

     * unify and simplify hgweb.cgi and hgwebdir.cgi scripts
     * fix race in refreshing repo list (issue2188)
     * simplify hgweb.cgi, add help pointer
     * deliver shell hook output to client
     * allow --port=0 to specify "choose free port number automatically"
     * improved templater performance

  Help

     * add new hgweb, glossary, and revsets topics
     * numerous improvements to help text

  Extensions

     * acl: support for access control base on branches and user-defined or \ 
OS-level groups
     * acl: added support for pretxncommit, so that one can call the ACL hook at (?)
     * bookmarks: add support for pushing and pulling bookmarks
     * churn: add possibility to include/exclude paths
     * color: add support for Windows consoles
     * color: colorize based on output labels instead of parsing output
     * extdiff: add labels, read diff arguments from [merge-tools]
     * keyword: offer svn-like default keywordmaps
     * keyword: support (q)record
     * mq: add a line to hg summary
     * mq: qpush --move, reorder patch series and apply only the patch
     * progress: progress support for many more commands
     * rebase: add option to not commit after a collapsing