We now build a second binary package lumail-debug.

  The debug-package contains the same configuration file
 but the binary is compiled with debugging symbols enabled.
  When compiling lumail-debug we output to a different
 filename.

  This allows the "real" and "debug" versions to be installed
 side-by-side.
  Ignore binary files from debian/
  Handle debug-symbols for the Debian package.
  The -debug package depends upon the main one.

  As per the debian-developers reference.
  Mark debug-builds in the output of --version.
  Avoid crashing if a header value is empty.
  Ctrl-k works on input.

  The readline function has been reformatted to be neater too.
 New primitive: load_directory().

  This loads *.lua from the given directory.  This will avoid
 our configuration file from needing local edits.
  Load ~/.lumail/*.lua too.
  Renamed the debug package to lumail-dbg.

  This fixes the lintian warning.
  Bump Debian standards version to 3.9.4.

  No changes required.
  Reformat to avoid lintian warning on long line.
  Move the -dbg package to have "Priority: extra".
 Move towards hardening the source, via compiler flags.

  This will only be used on the Debian binary packages,
 once released.
  Ignore ./debian/lumail-dbg.

  We've renamed the debug package so this is the new name for
 the previously-ignored directory lumail-debug.
  Added stub manpage for the Debian package.
  Fixed lintian warning in the generated binary packages.

  http://lintian.debian.org/tags/debian-rules-missing-recommended-target.html