Additional autotools for gitignore
Additional autotools for gitignore

Sources:
http://git.savannah.gnu.org/cgit/automake.git/tree/.gitignore
http://git.savannah.gnu.org/cgit/autoconf.git/tree/.gitignore

lcorbasson/cygwin-tooling,lcorbasson/cygwin-tooling,lcorbasson/cygwin-tooling