Convert (most of) the test data files into genuine XML. A handful still

are not, due mainly to the lack of support for XML character entities
(e.g. & => & ).  This will make it easier to validate test files using
tools like xmllint, as well as edit and view them using XML tools.

tests/data/test94

@@ -1,3 +1,4 @@
+<testcase>
 <info>
 <keywords>
 HTTPS
@@ -9,7 +10,7 @@ FAILURE
 #
 # Server-side
 <reply>
-<data nocheck=1>
+<data nocheck="1">
 HTTP/1.1 407 Needs proxy authentication
 Server: test-server/fake swsclose yesyes
 Proxy-Authenticate: Basic "oh please"
@@ -53,3 +54,4 @@ Proxy-Connection: Keep-Alive
 
 </protocol>
 </verify>
+</testcase>