integrate new-songs-list within release process

switch on patacrep_<version> tags to obtain the list of new songs

utils/new-songs-list.sh

@@ -3,13 +3,18 @@
 # Helper script to get the list of new songs added since the last version
 # The output is supposed to be copy/pasted into the NEWS item.
 
+GREP="$GREP_OPTIONS"
+export GREP_OPTIONS=""
+
 if [ $# -eq 1 ]
 then
     VERSION=$1
 else
     # Get current version
-    VERSION=`git tag | tail -n1`
+    VERSION=`git tag | grep patacrep | tail -n1`
 fi
 
 # Make new songs list by authors
 git shortlog $VERSION..master | egrep '^([^ ].*|.*Add song.*)' | sed 's/Add song.*://' | sed 's/\.$//' | sed 's/ (.*)//' | sed 's/\s\s\s*/  /'
+
+export GREP_OPTIONS="$GREP"

utils/release.sh

@@ -72,7 +72,9 @@ git status
 
 if [ $# -eq 1 ];
 then
-    git add templates/patacrep-en.tmpl templates/patacrep.tmpl 
+    echo -e "\nversion $MAIN.$MAJOR.$MINOR\n" | cat - NEWS > /tmp/out && mv /tmp/out NEWS
+    ./utils/new-songs-list.sh | cat - NEWS > /tmp/out && mv /tmp/out NEWS
+    git add templates/patacrep-en.tmpl templates/patacrep.tmpl NEWS
     git commit -a -m "patacrep release version $MAIN.$MAJOR.$MINOR" 
     git tag "patacrep_$MAIN.$MAJOR.$MINOR"
 fi