accept unknown server certificates by default on svn download

Some packages sources need to be checked out from server with unknown
certificates, silently accept by default in order not to stop builds, thanks rhk.

SVN-Revision: 20299

include/download.mk

@@ -70,7 +70,7 @@ define DownloadMethod/svn
 		cd $(TMP_DIR)/dl && \
 		rm -rf $(SUBDIR) && \
 		[ \! -d $(SUBDIR) ] && \
-		svn export --non-interactive -r$(VERSION) $(URL) $(SUBDIR) && \
+		svn export --non-interactive --trust-server-cert -r$(VERSION) $(URL) $(SUBDIR) && \
 		echo "Packing checkout..." && \
 		$(call dl_pack,$(TMP_DIR)/dl/$(FILE),$(SUBDIR)) && \
 		mv $(TMP_DIR)/dl/$(FILE) $(DL_DIR)/ && \