Remove dependency to autoconf-archive

It is generally not a good idea to add more and more external
dependencies unless absolutely needed.  autoconf-archive is a good
example of that, as we need to update all build machines, and older
OpenEmbedded versions do not appear to have (the right?)
autoconf-archive recipe. Provide local copy of necessary m4 files to fix
the build there.

The dependency to autoconf-archive was introduced in Change-Id
Ied9c950dafa65f324cf31298b13b590f56139700

Change-Id: Iacc1958b471ec3fc65307259039e1d496845f528
3 files changed
tree: 13a9cfce85b704595745cba9f2a22b171c12b99c
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap