contrib: lame: Avoid the dependency on gettext

Modify configure.in before reconfiguring, to avoid requiring the
dependency on gettext.

contrib/src/lame/rules.mak

@@ -3,9 +3,6 @@
 LAME_VERSION := 3.99.5
 LAME_URL := $(SF)/lame/lame-$(LAME_VERSION).tar.gz
 
-# gettext is necessary for $(RECONF) of lame
-DEPS_lame = gettext
-
 $(TARBALLS)/lame-$(LAME_VERSION).tar.gz:
 	$(call download_pkg,$(LAME_URL),lame)
 
@@ -16,6 +13,9 @@ lame: lame-$(LAME_VERSION).tar.gz .sum-lame
 	$(APPLY) $(SRC)/lame/lame-forceinline.patch
 	$(APPLY) $(SRC)/lame/sse.patch
 	$(APPLY) $(SRC)/lame/lame-outdated-autotools.patch
+	# Avoid relying on iconv.m4 from gettext, when reconfiguring.
+	# This is only used by the frontend which we disable.
+	cd $(UNPACK_DIR) && sed -i.orig 's/^AM_ICONV/#&/' configure.in
 	$(UPDATE_AUTOCONFIG)
 	$(MOVE)