toolchain/gcc: disable makeinfo

Newer versions of texinfo (>=5) break the gcc makeinfo routine, so just
disable it.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Tested-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

toolchain/gcc/gcc-uclibc-4.x.mk

@@ -254,6 +254,7 @@ $(GCC_BUILD_DIR1)/.configured: $(GCC_DIR)/.patched
 	mkdir -p $(GCC_BUILD_DIR1)
 	(cd $(GCC_BUILD_DIR1); rm -rf config.cache; \
 		$(HOST_CONFIGURE_OPTS) \
+		MAKEINFO=missing \
 		$(GCC_DIR)/configure $(QUIET) \
 		--prefix=$(HOST_DIR)/usr \
 		--build=$(GNU_HOST_NAME) \
@@ -324,6 +325,7 @@ $(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.patched
 	mkdir -p $(GCC_BUILD_DIR2)
 	(cd $(GCC_BUILD_DIR2); rm -rf config.cache; \
 		$(HOST_CONFIGURE_OPTS) \
+		MAKEINFO=missing \
 		$(GCC_DIR)/configure $(QUIET) \
 		--prefix=$(HOST_DIR)/usr \
 		--build=$(GNU_HOST_NAME) \
@@ -404,6 +406,7 @@ $(GCC_BUILD_DIR3)/.configured: $(GCC_SRC_DIR)/.patched $(GCC_STAGING_PREREQ)
 	ln -snf ../include/ $(HOST_DIR)/usr/$(GNU_TARGET_NAME)/sys-include
 	(cd $(GCC_BUILD_DIR3); rm -rf config.cache; \
 		$(HOST_CONFIGURE_OPTS) \
+		MAKEINFO=missing \
 		$(GCC_SRC_DIR)/configure $(QUIET) \
 		--prefix=$(HOST_DIR)/usr \
 		--build=$(GNU_HOST_NAME) \