[luatex] otf fonts (ligatures, cache, etc.)

[Elie Roux]

Elie Roux a écrit :
> I'll make a folder on github 
> (http://github.com/eroux/lualatex/tree/master) called luaotfload that 
> will contain the code from ConTeXt (a bit adapted), so that you'll be 
> able to test it.

Done. Basically the changelog is:

 - renaming the files to otfl-oldname to prevent name clashes
 - using luaextra functions instead of ConTeXt l-*.lua libraries 
(luaextra is mostly code from these anyway)
 - using normal attributes (obtained with \newluaattribute) instead of 
attributes > 127
 - adding a Plain+LaTeX sty file
 - registering the lua file as a lua module
 - using callback.add instead of callback.register
 - adding functions to turn the font mechanism on and off (on by default)

Thank you,
-- 
Elie