Fix songs syntax with the new booleans

songs/barbara/l_aigle_noir.sg

@@ -10,8 +10,7 @@
   \gtab{D}{XX0232}
   \gtab{B&}{1:X02220}
   \gtab{E&}{6:X02220}
-  \ifnorepeatchords%
-  \else%
+  \ifrepeatchords%
   \gtab{G}{320003}
   \gtab{Am}{X02210}
   \gtab{E}{022100}

songs/bruce_springsteen/pay_me_my_money_down.sg

@@ -6,8 +6,7 @@
   \cover
   \gtab{G}{320003}
   \gtab{D}{XX0232}
-  \ifnorepeatchords%
-  \else%
+  \ifrepeatchords%
   \gtab{B&}{1:X02220}
   \gtab{F}{1:022100}
   \fi%

songs/le_donjon_de_naheulbeuk/chicken_quest.sg

@@ -13,16 +13,16 @@
   \gtab{E}{022100}
   \gtab{Dm}{XX0231}
   \gtab{G#}{4:022100}
-  \ifnorepeatchords%
-  \gtab*{G6}{320000}
-  \gtab{F#7}{2:020100}
-  \else%
+  \ifrepeatchords%
   \gtab{Cm}{3:X02210}
   \gtab{E&}{3:X32010}
   \gtab{B&}{1:X02220}
   \gtab{A&}{4:022100}
   \gtab*{B&6}{3:020000}
   \gtab{A7}{X02020}
+  \else%
+  \gtab*{G6}{320000}
+  \gtab{F#7}{2:020100}
   \fi%
 
   \textnote{\Intro}

songs/michel_sardou/les_lacs_du_connemara.sg

@@ -10,8 +10,7 @@
   \gtab{Dm}{XX0231}
   \gtab{Gm}{1:022000}
   \gtab{D7}{XX0212}
-  \ifnorepeatchords%
-  \else%
+  \ifrepeatchords%
   \gtab{Gm7}{1:022030}
   \gtab{G#}{3:022100}
   \gtab{C#}{1:X32010}

songs/roger_glover/love_is_all.sg

@@ -54,7 +54,7 @@
       It's ea\[G]sy, yes it's so \[C]easy
       At the \[Am]Butterfly Ball where \[D]love is all
       And \[G]it's so \[C]easy
-      \ifnorepeatchords\else\nolyrics{ | \[B] | \[E] | \[A] | \[D] | \rep{4} }\fi
+      \ifrepeatchords\nolyrics{ | \[B] | \[E] | \[A] | \[D] | \rep{4} }\fi
     \end{chorus}
 
     \begin{verse}