Added test case 536 in an attempt to add Bogdan Nicula's problematic case

with multi interface and pipelining. This test just works and did not repeat
the problem his test code showed, but could still serve as a useful test.

tests/data/test536

@@ -0,0 +1,63 @@
+<reply>
+<data mode="text">
+HTTP/1.1 404 Badness
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+ETag: "21025-dc7-39462498"
+Content-Length: 6
+Content-Type: text/html
+Funny-head: yesyes
+
+hejsan
+</data>
+<data1>
+HTTP/1.1 200 Fine
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Content-Length: 13
+Connection: close
+Content-Type: text/html
+
+fine content
+</data1>
+
+<datacheck>
+fine content
+Finished!
+</datacheck>
+
+<servercmd>
+pipe: 1
+</servercmd>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+# tool is what to use instead of 'curl'
+<tool>
+lib536
+</tool>
+
+ <name>
+HTTP GET multi two files with FAILONERROR and pipelining
+ </name>
+ <command>
+http://%HOSTIP:%HTTPPORT/536 http://%HOSTIP:%HTTPPORT/5360001
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<protocol>
+GET /536 HTTP/1.1
+Host: 127.0.0.1:%HTTPPORT
+Accept: */*
+
+GET /5360001 HTTP/1.1
+Host: 127.0.0.1:%HTTPPORT
+Accept: */*
+
+</protocol>
+</verify>