Fixed a couple more locale-dependent toupper conversions, mainly for

clarity.  This does fix one problem that causes ;type=i FTP URLs
to fail in the Turkish locale when CURLOPT_PROXY_TRANSFER_MODE is
used (test case 561)

Added tests 561 and 1092 through 1094 to test various combinations
of ;type= and ;mode= URLs that could potentially fail in the Turkish
locale.

tests/data/test1092

@@ -0,0 +1,55 @@
+<testcase>
+<info>
+<keywords>
+FTP
+HTTP
+HTTP GET
+HTTP proxy
+</keywords>
+</info>
+#
+# Server-side
+<reply>
+<data>
+HTTP/1.0 200 OK
+Date: Thu, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake swsclose
+Content-Type: text/html
+Funny-head: yesyes
+
+contents
+</data>
+</reply>
+
+#
+# Client-side
+<client>
+<server>
+http
+</server>
+<features>
+ftp
+</features>
+ <name>
+FTP over HTTP proxy
+ </name>
+ <command>
+"ftp://%HOSTIP:%HTTPPORT/we/want/that/page/1092;type=i" --use-ascii -x %HOSTIP:%HTTPPORT
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+<strip>
+^User-Agent:.*
+</strip>
+<protocol>
+GET ftp://%HOSTIP:%HTTPPORT/we/want/that/page/1092;type=i HTTP/1.1
+Host: %HOSTIP:%HTTPPORT
+Accept: */*
+Proxy-Connection: Keep-Alive
+
+</protocol>
+</verify>
+</testcase>