build: print missing dependency error to stderr

Allow to see the actual error even when compiling with V=w/V=1 only.

Signed-off-by: Jonas Gorski <jogo@openwrt.org>

SVN-Revision: 37388

include/package-ipkg.mk

@@ -64,8 +64,8 @@ ifneq ($(PKG_NAME),toolchain)
 				echo "$$$$FILE" >> $(PKG_INFO_DIR)/$(1).missing; \
 		done; \
 		if [ -f "$(PKG_INFO_DIR)/$(1).missing" ]; then \
-			echo "Package $(1) is missing dependencies for the following libraries:"; \
+			echo "Package $(1) is missing dependencies for the following libraries:" >&2; \
-			cat "$(PKG_INFO_DIR)/$(1).missing"; \
+			cat "$(PKG_INFO_DIR)/$(1).missing" >&2; \
 			false; \
 		fi; \
 	)