uri->string / make-uri path encoding inconsistencies

[andyjpb]

(use uri-common)

#;11> (uri->string (uri-reference "./5:123"))
"./5:123"

Correct!

#;12> (uri->string (make-uri path: '("5:123")))
"5%3A123"

Incorrect!

#;13> (uri->string (make-uri path: '("." "5:123")))
"./5%3A123"

Incorrect!

make-uri appears to have its own path encoder which is encoding an overly broad set of characters. It also seems to lack the logic for consing "./" onto paths that have a colon in the first part.