fix typo in font-nms
revise doc
revise docs
decrease verbosity of normal logging
make mkluatexfontdb.lua behave differently if called as *fontdbutil*
document behavior modes of fontdbutil
revise doc
add --info arg to fontdbutil
document --info option
fix docs
merge from eroux
sync with Context as of 2013-04-21
reduce verbosity of the font loader

this is my version of:

    https://github.com/phi-gamma/luaotfload/commit/3a59b8b6b226ed22ccd16aec2dc2e272f015cc74

I undid the original because our policy is not to change imported files
except for applying hot fixes in advance that Hans will add eventually.

However, we’ll see if we really need otfl-fonts.lua anyways as its
functionality might fit better in to luaotfload.lua.
restore otfl-basics-gen.lua (needed in fontdbutil)