Log Message:
Update to 0.65.0, set LICENSE, and fix build with png-1.5.

0.65.0:

I have just uploaded the archives for a new luatex release, 0.65.0.

This release mostly fixes a number of bugs, but it also deprecates
a number of existing lua and macro commands. Please read the News
section carefully if you are the current maintainer of a luatex
macro package.

News:

    * The Aleph and Omega version primitives are deprecated.
    * The Apple Snow Leopard Truetype font collections now work
      properly.
    * Libpng has been updated to 1.4.4, and zlib to 1.2.5.
    * New lua functions node.next() and node.prev().
    * The already deprecated for some time node.protrusion_skipable()
      function has been removed.
    * fontloader.apply_featurefile() and
      fontloader.apply_afmfile() now return nil,<errortable> on failure.
    * The various node list fields in the lua node interface have
      been renamed from 'list' to 'head', e.g. tex.box[0].head,
      and the 'list' name is deprecated. For now, the deprecation
      is silent, as 'list' will stay for quite some time. Please
      update your lua source as soon as possible, though.
    * The call node.type(<node>) now returns "node". The existing
      functionality is otherwise unchanged.
    * Luafilesystem has been updated to 1.5.0. NOTE: there is an
      incompatible change in the directory iterator method.
    * The restriction on linebreak_filter has been eased: at least one
      horizontal box should be returned, but that is not necessarily
      the last node any more.
    * Backward compatibility has been restored for \meaning\mathchar
    * node.first_character() has been renamed to node.first_glyph()
      to better match its actual functionality.
    * The \Umathaccent primitive now supports both/bottom keywords,
      and \Umathbotaccent / \Umathaccents are now deprecated.
    * The \Umathaccent primitive now also supports the fixed keyword,
      which supports non-growing math accents even if the font says
      there are extensible variants.
    * Ongoing work on the epdf library.

0.64.0:

I have just uploaded the archives for a new luatex release, 0.64.0.
This is a development release, but it also fixes a few rather
annoying bugs in 0.63.0.

News:

* New lua functions pdf.refobj(), pdf.maxobjnum() and pdf.objtype()
* New lua function node.is_node()
* The max_strings configuration variable's maximum value is
  raised to be identical to texlive's maximum (2097151), and
  same for param_size (32767).
* The embedded mplib is now 1.503.
* Minor cleanups in the output of fontloader.to_table():
  - removed out-of-range altuni's from the output
  - don't dump the extra encodings, just the actual font encoding
  - export the encoding's name also as 'enc_name' at one level up
  - no longer exporting unset macstyles, nor zero uniqueids
  - fix creationtime and modification time
* Ongoing work on the epdf library

Bugfixes:
* Fix a bug where an explicit hyphen prevented hyphenation for the
  whole rest of the paragraph
* Internal font copying forgot to copy the last font dimen
* os.selfdir() is now documented
* patch quad (\fontdimen6) in \letterspacefont to be compatible
  with pdftex
* Multi-page pdf inclusion was very slow in 0.63.0
* Some extra checks added to the handling of glue_spec node
  objects in lua code.
* Some node.prev pointers have been corrected (but this is not
  quite finished).
* A small fix to lpeg 0.9.