Issue 4357/3: Run preparatory script replacing listener macros

Issue 4357/3: Run preparatory script replacing listener macros

This script is

for i in $(git grep -l 'IMPLEMENT_LISTENER (')
do
    sed -i '/IMPLEMENT_LISTENER ([^)]*$/{N;s/\n\s*/ /}' $i
    sedscript=$(git grep -h 'IMPLEMENT_LISTENER (' $i|
		       sed 's|^.*IMPLEMENT_LISTENER (\([^,]*\), \([^)]*\)).*$|s/GET_LISTENER (\\([_a-z]\\+->\\)\\?\2)/\\1GET_LISTENER (\1, \2)/|')
    sed -i "$sedscript" $i
done
sed -i '/IMPLEMENT_LISTENER (/d' $(git grep -l 'IMPLEMENT_LISTENER (')
sed -i 's/DECLARE_LISTENER (\([^)]*\));\?/void \1 (SCM);/' $(git grep -l 'DECLARE_LISTENER (')