RELEASES.rst is only updated in master branch to make it easier to make
and merge fixes to multiple branches. Including it in the dist package
would mean that it would need to be updated in maintenance branches too
or it would be out-of-date in patch releases.
So, drop release notes from the dist package, and just link to it in the
dist README.
The default is a barebones build and it happens without any specific options.
This is a better default for people trying Duktape out for the first time.
Technically this should probably not be necessary: Duktape module loader
is a fully own implementation based on the CommonJS module loading
specification. The specification is not shipped with the distributable,
just the master repo. But it's perhaps best to mention it in the README
still.
This will make it more probable that the initial compilation works without
investigating a linker error.
Ideally the Makefile would detect readline availability, but that would
require `uname` or some other platform hackery, which is probably too
heavyweight for a simple example Makefile.