Kconfig cleanup megapatch from Nicolas Kaiser <nikai@nikai.net>.

modules.txt no longer exists, and the common wording used to refer to
it sucks.  This is all by Nicolas Kaiser's: at Randy and Matthew's
request, "say M" changed to "choose M" (more sense for graphical front
ends, too).

From:  GertJan Spoelman <kl@gjs.cc>

  OK, here is a new patch, I edited the old patch and took out the .ko's
  so now the extension is trimmed instead.

This adds the remaining config files.