curl: add --fail-early

Exit with an error on the first transfer error instead of continuing to
do the rest of the URLs.

Discussion: https://curl.haxx.se/mail/archive-2016-11/0038.html

tests/data/Makefile.inc

@@ -127,7 +127,7 @@ test1216 test1217 test1218 test1219 \
 test1220 test1221 test1222 test1223 test1224 test1225 test1226 test1227 \
 test1228 test1229 test1230 test1231 test1232 test1233 test1234 test1235 \
 test1236 test1237 test1238 test1239 test1240 test1241 test1242 test1243 \
-test1244 test1245 test1246 \
+test1244 test1245 test1246 test1247 \
 \
 test1300 test1301 test1302 test1303 test1304 test1305 test1306 test1307 \
 test1308 test1309 test1310 test1311 test1312 test1313 test1314 test1315 \

tests/data/test1247

@@ -0,0 +1,38 @@
+<testcase>
+<info>
+<keywords>
+HTTP
+--fail-early
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data>
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+none
+</server>
+ <name>
+--fail-early
+ </name>
+ <command>
+--fail-early h1234://%HOSTIP:%HTTPPORT/1247 http://%HOSTIP:%HTTPPORT/1247
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+# Protocol "h1234" not supported or disabled in libcurl
+<errorcode>
+1
+</errorcode>
+</verify>
+</testcase>