Resolve individual repository access.

Part of RFC 2872 specifies that individuals should not be given permissions to repositories. We have a few individuals currently with access that we should resolve. They currently are:

• areweasyncyet.rs:
  • upsuper
  • Recommend: Create a team, figure out relationship with web-presence.
• backtrace-rs:
  • alexcrichton
  • Recommend: Remove Alex, he's been uninvolved for a few years.
• cargo-bisect-rustc:
  • ehuss
  • Recommend: Create a team, subteam of compiler (@ehuss assigned).
• cc-rs
  • NobodyXu
  • Recommend: Create a team, subteam of libs.
• flate2-rs
  • alexcrichton
  • brson
  • Recommend: Remove Alex (specified he has handed off) and brson (hasn't been involved).
• google-summer-of-code
  • Kobzol
  • jackh726
  • Recommend: Create a team? Working-group? Where to slot it?
• log
  • Thomasdezeeuw
  • Recommend: Create a team, subteam of libs.
• mdbook
  • Dylan-DPC
  • Recommend: Create a team, subteam of devtools (@ehuss assigned).
• pkg-config-rs
  • sdroege
  • Recommend: Create a team, subteam of libs.
• project-deref-patterns
  • traviscross
  • Recommend: Switch to lang-ops.
• rustc_codegen_cranelift
  • bjorn3
  • Recommend: Create a team, subteam of compiler.
• socket2
  • chansuke
  • sfackler
  • Thomasdezeeuw
  • carllerche
  • Darksonn
  • Recommend: Create a team, subteam of libs.

Start with RFC 2872 and the repository list in this issue, including each unchecked recommendation and its current individual access. Confirm the appropriate team or ownership relationship for every repository, then verify that individual permissions have been replaced or removed and all checklist items are resolved.