tests: verify newline in username and password for HTTP

test 1296 is a simply command line test

test 1910 is a libcurl test including a redirect

tests/data/test1296

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+<testcase>
+<info>
+<keywords>
+HTTP
+HTTP Basic
+</keywords>
+</info>
+
+# Server-side
+<reply>
+<data>
+HTTP/1.1 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Last-Modified: Tue, 13 Jun 2000 12:10:00 GMT
+ETag: "21025-dc7-39462498"
+Accept-Ranges: bytes
+Content-Length: 6
+Connection: close
+Content-Type: text/html
+Funny-head: yesyes
+
+-foo-
+</data>
+</reply>
+
+# Client-side
+<client>
+<server>
+http
+</server>
+
+<name>
+HTTP URL with %0a in name part
+</name>
+
+<command>
+http://user%0aname:password@%HOSTIP:%HTTPPORT/1296
+</command>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<strip>
+^User-Agent:.*
+</strip>
+<protocol>
+GET /1296 HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Authorization: Basic dXNlcgpuYW1lOnBhc3N3b3Jk
+Accept: */*
+
+</protocol>
+</verify>
+</testcase>
+