use new Adlib macro

Anis/Dans_tes_yeux.sg

@@ -84,7 +84,7 @@
   \end{repeatedchords}
 
   \begin{verse*}
-    \musicnote {\Outro : \nolyrics \[A{\shrp} C7 A Dm A{\shrp} Gm6 A Dm] \echo{adlib}}
+    \musicnote {\Outro : \nolyrics \[A{\shrp} C7 A Dm A{\shrp} Gm6 A Dm] \Adlib}
   \end{verse*}
 
 \endsong

Nirvana/Dumb.sg

@@ -76,7 +76,7 @@
   \begin{verse}
     \[Em] \[Am]{I think} I'm du\[G]mb
     \[C]{I think} I'm du\[Em]mb
-    \musicnote{Ad libidum}
+    \musicnote{\Adlib}
   \end{verse}
 
 \endsong

Thomas_Fersen/La_malle.sg

@@ -129,7 +129,7 @@
     J'ai con\[G#]tinué la fête
     Jus\[A]{qu'au} petit matin
     J'ai con\[G#]tinué la fête
-    {\nolyrics \[A] \[G#]} (ad lib)
+    {\nolyrics \[A] \[G#]} \Adlib
   \end{chorus}
 
 \endsong

Thomas_Fersen/Punaise.sg

@@ -104,7 +104,7 @@
     \musicnote{\Outro : {
     \nolyrics \[D] \[G] \[D] \[G]
     \nolyrics \[Em] \[A] \[D] \[G]
-    \nolyrics \[D] \[G] (ad lib.)}}
+    \nolyrics \[D] \[G] \Adlib}}
   \end{verse*}
 
 \endsong

Thomas_Fersen/Rititi_ratata_il_parait_qu_elles_aiment_.sg

@@ -131,7 +131,7 @@
   \begin{verse*}
     \musicnote {\Outro :}
     \musicnote {\nolyrics \[E{\flt}m B A{\flt}m G{\flt} B{\flt}7] \rep{2}}
-    \musicnote {\nolyrics \[E{\flt}m B{\flt}7] \rep{2} (ad lib)}
+    \musicnote {\nolyrics \[E{\flt}m B{\flt}7] \rep{2} \Adlib}
   \end{verse*}
 
 \endsong