Compile all the twolame packages so we can get the .pc

(cherry picked from commit c0dd0545)
Signed-off-by: Rémi Denis-Courmont <remi@remlab.net>

extras/contrib/src/Makefile

@@ -1706,7 +1706,7 @@ ifdef HAVE_WIN32
 endif
 
 .twolame: twolame
-	(cd twolame; $(HOSTCC) CFLAGS="${CFLAGS}  -DLIBTWOLAME_STATIC" ./configure $(HOSTCONF) --prefix=$(PREFIX) && cd libtwolame &&  make && make install)
+	(cd twolame; $(HOSTCC) CFLAGS="${CFLAGS}  -DLIBTWOLAME_STATIC" ./configure $(HOSTCONF) --prefix=$(PREFIX) &&  make && make install)
 	$(INSTALL_NAME)
 	touch $@