For those who may require them for compatibility with newer binaries or source
code, here are recent versions of binutils, gcc, and glibc. Things to note:

Only lightly tested here, but expected to work for runtime purposes.

You can always back them out by upgradepkg'ing to the older versions, but
anything that you've compiled since installing these will stop working.

Sources that compiled previously might require patching to compile with the
newer gcc.

Basic multilib support is included.

Enjoy!

  -P.