Allow quotes in URI

IE6 apparently sends such requests... Reported by Michael Carter.

http_parser.rl

@@ -306,7 +306,7 @@ do {                                                                 \
   national = any -- (alpha | digit | reserved | extra | safe | unsafe);
   unreserved = (alpha | digit | safe | extra | national);
   escape = ("%" xdigit xdigit);
-  uchar = (unreserved | escape);
+  uchar = (unreserved | escape | "\"");
   pchar = (uchar | ":" | "@" | "&" | "=" | "+");
   tspecials = ("(" | ")" | "<" | ">" | "@" | "," | ";" | ":" | "\\" | "\""
               | "/" | "[" | "]" | "?" | "=" | "{" | "}" | " " | "\t");

test.c

@@ -302,6 +302,21 @@ const struct message requests[] =
   ,.body= "hello world"
   }
 
+#define WITH_QUOTES 12
+, {.name= "with quotes"
+  ,.type= HTTP_REQUEST
+  ,.raw= "GET /with_\"stupid\"_quotes?foo=\"bar\" HTTP/1.1\r\n\r\n"
+  ,.should_keep_alive= TRUE
+  ,.method= HTTP_GET
+  ,.query_string= "foo=\"bar\""
+  ,.fragment= ""
+  ,.request_path= "/with_\"stupid\"_quotes"
+  ,.request_uri= "/with_\"stupid\"_quotes?foo=\"bar\""
+  ,.num_headers= 0
+  ,.headers= { }
+  ,.body= ""
+  }
+
 , {.name= NULL } /* sentinel */
 };