Extensive rewrite of parsing routines, most parsable headers in

requests and entities are now parsed.  Furthermore the whole
request-entity handling has been changed to allow lazy parsing, parsed
entity headers, and flexible choice of entities.  This is all to
support the handling of MIME multipart entities, especially
multipart/form-data.  The current revision is a first cut, and some
further rewrites are needed.

CLASH.system

@@ -42,6 +42,8 @@
 				  :depends-on ("conditions" "status-codes"))
 			   (:file "version"
 				  :depends-on ("conditions" "status-codes"))
+			   (:file "mime"
+				  :depends-on ("conditions" "parsing"))
 			   (:file "buffer"
 				  :depends-on ("conditions"))
 			   (:file "http-io"