am/guilec: Add to the repository
build-aux/gitlog-to-changelog: Add to the repository
build-aux/.gitignore: Add to the repository
m4/guile-2.0.m4, m4/pkg.m4: Add to the repository
NEWS: Add to the repository
Use GNU Build System

* Makefile.am, configure.ac, am/Makefile.am, build-aux/Makefile.am,
  build-aux/compile, build-aux/config.rpath, m4/Makefile.am,
  pigpen/Makefile.am: Add to the repository.