GitLab

For the sake of completeness, include MAINTAINER as well as
PACKAGER to provide newapkbuild with comment metadata.

allow user specify if they want uninstall deps, remove srcdir and/or
pkgdir on failure or success.

We introduce CLEANUP and ERROR_CLEANUP config options in
/etc/abuild.conf. Valid values are: pkgdir srcdir deps.

makes it easier to support parallel builds on non gnu make system

This will let user specify a directory where the repositories are.
Setting REPODEST will override PKGDEST.