lalmetaio: bump library api version for 1.5.0

lalmetaio/configure.ac

@@ -60,7 +60,7 @@ LALSUITE_DISTCHECK_CONFIGURE_FLAGS
 #    then increment age.
 # 6. if any interfaces have been removed since the last public release,
 #    then set age to 0.
-AC_SUBST([LIBCURRENT],[6])
+AC_SUBST([LIBCURRENT],[7])
 AC_SUBST([LIBREVISION],[0])
 AC_SUBST([LIBAGE],[0])
 AC_SUBST([LIBVERSION],[${LIBCURRENT}:${LIBREVISION}:${LIBAGE}])