Merge pull request #407 from euanh/master

ocaml-rrd-transport: Fix cmdliner dependency
Ignore backup files
Merge pull request #408 from BobBall/backup_files

Ignore backup files
Fix changelog for debian builds
Merge pull request #410 from BobBall/fix-daves-broken-change

Fix changelog for debian builds
mappkgname: Fix mapping for libffi

Signed-off-by: Euan Harris <euan.harris@citrix.com>