Fix tmp/format-headers.sh, format headers

The script had "s surrounding the git ls-files command which turned it
to a single file which of course is wrong.

Ran script again fixing many README.md files that had incorrect number
of blank lines for critical headers.

This will have to be done a final but a good number of files have been
corrected.

2014/birken/README.md

@@ -70,7 +70,6 @@ You can combine them both of course.
 
 ### Alternate use:
 
-
 Use `prog.alt` as you would `prog` above. Remember that ports < 1024 are
 privileged ports that unprivileged users cannot use.