The repositories use following naming scheme:

<release>/<project>{-gate}?/<component>

where

release :: the name of the release such as "jdk7"
project :: the name of an OpenJDK project such as "swing", "tl", or "modules"
component :: the name of a repository containing a logical subset of the code base such as "langtools"
"swing" and "tl" are not OpenJDK projects are they?  They're certainly not listed under "Projects" in the list on  the left of the page. "Integration-family or project", maybe?

-- Jon