build was updated to fix issues with local builds.

The following bugs were fixed:

* boo#953782: expension error during local build, add openSUSE 42.1 config

Also includes all current upstream changes:

* avoid full path in sha256 files of products
* support virtio-rng device in kvm builds
* lxc 1.1 support
* avoid dependency to perl(parent) again
* fixed buildtime source service execution
* fixed debian collax support
* collax support added
* Fix auto-detection of -p1 option to patch
* Handle .deb files that have sysv ar(1) filenames
* Exported RECIPEFILE in build-recipe-livebuild