Signed-off-by: Allan McRae <allan@archlinux.org>

While still possible with 'commitpkg core', there is a chance it will
prevent accidental pushes straight to [core].

The added PKGBUILD.proto file is so that shellcheck can know know what
to expect that a PKGBUILD sets.

The default m4 quote characters: `QUOTE' are troublesome, because ` is
fairly likely to pop up in a shell script (if not for a subshell, because
it is a useful character in comments and user-facing messages).

So, this changes it to [[[QUOTE]]], as it is unlikely to see three braces
together like that, let alone in unbalanced sets.

The absence of it was allowing an (m4-produced) syntax error in
in a change I had made to be masked.

This makes it a lot easier to swap out the host that actually serves the repos in the future.

It's an xmas miracle!

- Uses now systemd-nspawn, so its not compatible with openrc.
- Added bash and zsh completion.
- mkarchroot (mkmanjaroroot) lost the -b (branch) -a (arch) options instead you should copy the correct files using -M for makepkg (arch) or -S for pacman-mirrors (branch). The archbuild (manjarobuild) script have been updated to follow this.
- makechrootpkg also lost the -b option (branch), instead it should point to a chroot with the correct branch and other config files already set.
- manjarobuild and mkmanjaroroot are now symlinks to archbuild and mkarchroot (to keep differences from upstream to a minimum).
- Includes all fixes and updates between upstream devtools-20130408 and devtools-20141024.

For example...

$ make
GEN checkpkg
GEN commitpkg
GEN archco
archco: line 179: unexpected EOF while looking for matching `"'
archco: line 181: syntax error: unexpected end of file
make: *** [archco] Error 2

Signed-off-by: Dave Reisner <dreisner@archlinux.org>
Signed-off-by: Pierre Schmitz <pierre@archlinux.de>

- maybe revert if needed

Separates the two features of mkarchroot. Provides users of the new
arch-nspawn with the full feature set of systemd-nspawn.

For example, this can be used to bind custom directories into the chroot.