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.

tmp/format-headers.sh

@@ -9,7 +9,7 @@
 # the [0-9]{4} directories.
 #
 
-for i in "$(git ls-files '[0-9][0-9][0-9][0-9]/*README.md')"; do
+for i in $(git ls-files '[0-9][0-9][0-9][0-9]/*README.md'); do
     perl -0777 -p -i -e 's/([^\n]\n)\n*##*[[:space:]]*(To build):?\n\n*([^\n])?/$1\n\n## $2:\n\n$3/' "$i"
     perl -0777 -p -i -e 's/([^\n]\n)\n*##*[[:space:]]*(Bugs and \(Mis\)features):?\n\n*([^\n])?/$1\n\n### $2:\n\n$3/' "$i"
     perl -0777 -p -i -e 's/([^\n]\n)\n*##*[[:space:]]*(To use):?\n\n*([^\n])?/$1\n\n## $2:\n\n$3/' "$i"