url: use the URL API internally as well

... to make it a truly unified URL parser.

Closes #3017

tests/data/test325

@@ -15,7 +15,7 @@ HTTP/1.1 301 OK
 Date: Thu, 09 Nov 2010 14:49:00 GMT
 Server: test-server/fake
 Content-Length: 7
-Location: http://%HOSTIP:%HTTPPORT/325
+Location: http://somewhere/325
 
 MooMoo
 </data>
@@ -24,7 +24,7 @@ HTTP/1.1 301 OK
 Date: Thu, 09 Nov 2010 14:49:00 GMT
 Server: test-server/fake
 Content-Length: 7
-Location: http://%HOSTIP:%HTTPPORT/325
+Location: http://somewhere/325
 
 </datacheck>
 </reply>

tests/data/test523

@@ -39,7 +39,7 @@ HTTP GET with proxy and CURLOPT_PORT
  </name>
 # first URL then proxy
  <command>
-http://www.example.com:999/523 http://%HOSTIP:%HTTPPORT 
+http://www.example.com:999/523 http://%HOSTIP:%HTTPPORT
 </command>
 </client>
 
@@ -50,7 +50,7 @@ http://www.example.com:999/523 http://%HOSTIP:%HTTPPORT
 ^User-Agent:.*
 </strip>
 <protocol>
-GET HTTP://www.example.com:19999/523 HTTP/1.1
+GET http://www.example.com:19999/523 HTTP/1.1
 Host: www.example.com:19999
 Authorization: Basic eHh4Onl5eQ==
 Accept: */*

tests/data/test563

@@ -47,7 +47,7 @@ ftp_proxy=http://%HOSTIP:%HTTPPORT/
 # Verify data after the test has been "shot"
 <verify>
 <protocol>
-GET FTP://%HOSTIP:%FTPPORT/563;type=A HTTP/1.1
+GET ftp://%HOSTIP:%FTPPORT/563;type=A HTTP/1.1
 Host: %HOSTIP:%FTPPORT
 Accept: */*
 Proxy-Connection: Keep-Alive