- misc cleanup

there's a namespace or include

- don't call os.stat twice !
- tee hee !

  it's internal _data dictionary, now
  include just what was specified to
  render() as well as Mako builtins
  'caller', 'capture'.  The contents
  of __builtin__ are no longer copied.

- The "output encoding" now defaults
  to "ascii", whereas previously
  it was set to None.  This has the effect
  of FastEncodingBuffer being used internally
  by default when render() is called, instead
  of cStringIO or StringIO, which are
  slower, but allow bytestrings with
  unknown encoding to pass right through.
  It is of course not recommended to use
  bytestrings of unknown encoding. Usage of
  the "disable_unicode" mode also requires
  that output_encoding be set to None.

- convert heading copyrights to 2006-2011, reference AUTHORS file

least remove huge lines

- move Namespace docs inline to attributes on Namespace
- document Cache methods, add to caching.rst
- use functools.partial for partials, part of [ticket:156]

  '' write in the case of backslash-ended
  lines.  [ticket:155]

  is delayed until actually needed;
  this to remove the performance penalty
  from startup, particularly for
  "single execution" environments
  such as shell scripts. [ticket:153]

  setup.py instead of "install_requires".
  This to produce a lighter weight install
  for those who don't use the caching
  as well as to conform to Pyramid
  deployment practices.  [ticket:154]

  setup.py which prevented setup.py
  from running 2to3 on install.
  [ticket:148]

  are considered "undefined", meaning they
  are pulled from the context, has been
  trimmed back to not include variables
  declared inside of expressions (i.e. from
  list comprehensions), as well as
  in the argument list of lambdas.  This
  to better support the strict_undefined
  feature.

  strict_undefined=True, will cause
  variables not found in the context to
  raise a NameError immediately, instead of
  defaulting to the UNDEFINED value.

  This to support GAE which can't run markupsafe.
  [ticket:151] No idea whatsoever if the
  install_requires in setup.py also breaks GAE,
  couldn't get an answer on this.

doesn't occur on Python 2.7

  such as <%foo:bar x="${...}">, now
  allow multiline Python expressions.