url: Fix parsing for when 'file' is the default protocol

Follow-up to 3463408.

Prior to 3463408 file:// hostnames were silently stripped.

Prior to this commit it did not work when a schemeless url was used with
file as the default protocol.

Ref: https://curl.haxx.se/mail/lib-2016-11/0081.html
Closes https://github.com/curl/curl/pull/1124

Also fix for drive letters:

- Support --proto-default file c:/foo/bar.txt

- Support file://c:/foo/bar.txt

- Fail when a file:// drive letter is detected and not MSDOS/Windows.

Bug: https://github.com/curl/curl/issues/1187
Reported-by: Anatol Belski
Assisted-by: Anatol Belski

tests/data/Makefile.inc

@@ -120,7 +120,7 @@ test1112 test1113 test1114 test1115 test1116 test1117 test1118 test1119 \
 test1120 test1121 test1122 test1123 test1124 test1125 test1126 test1127 \
 test1128 test1129 test1130 test1131 test1132 test1133 test1134 test1135 \
 test1136 test1137 test1138 test1139 test1140 test1141 test1142 test1143 \
-test1144 \
+test1144 test1145 test1146 \
 test1200 test1201 test1202 test1203 test1204 test1205 test1206 test1207 \
 test1208 test1209 test1210 test1211 test1212 test1213 test1214 test1215 \
 test1216 test1217 test1218 test1219 \

tests/data/test1145

@@ -0,0 +1,40 @@
+<testcase>
+<info>
+<keywords>
+FILE
+</keywords>
+</info>
+
+<reply>
+</reply>
+
+# Client-side
+<client>
+<server>
+file
+</server>
+<name>
+file:// bad host
+</name>
+# This command should not succeed since we only accept
+# file:/// file://localhost/ file://127.0.0.1/
+<command>
+file://bad-host%PWD/log/test1145.txt
+</command>
+<file name="log/test1145.txt">
+foo
+   bar
+bar
+   foo
+moo
+</file>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+# CURLE_URL_MALFORMAT is error code 3
+<errorcode>
+3
+</errorcode>
+</verify>
+</testcase>

tests/data/test1146

@@ -0,0 +1,45 @@
+<testcase>
+<info>
+<keywords>
+FILE
+--proto-default
+</keywords>
+</info>
+
+<reply>
+<data>
+foo
+   bar
+bar
+   foo
+moo
+</data>
+</reply>
+
+# Client-side
+<client>
+<server>
+file
+</server>
+<name>
+--proto-default file
+</name>
+<command>
+--proto-default file %PWD/log/test1146.txt
+</command>
+<file name="log/test1146.txt">
+foo
+   bar
+bar
+   foo
+moo
+</file>
+</client>
+
+# Verify data after the test has been "shot"
+<verify>
+<errorcode>
+0
+</errorcode>
+</verify>
+</testcase>

tests/data/test1534

@@ -27,7 +27,7 @@ http
 lib1534
 </tool>
 <name>
-Test CURLINFO_RESPONSE_CODE
+CURLINFO_FILETIME init and reset
 </name>
 <command>
 http://%HOSTIP:%HTTPPORT/1534