bugfix: move dependencies handling to lib.sh

do it strategically, in just the right place so that the
version and versiondate files aren't written.

otherwise, version/versiondate are written as root and
the build system becomes unusable after that, unless you
reset the file ownerships from root. hardly user-friendly.

mitigate this bug.

Signed-off-by: Leah Rowe <leah@libreboot.org>

build

@@ -16,7 +16,7 @@ fi
 . "include/vendor.sh"
 . "include/mrc.sh"
 
-eval "$(setvars "" aur_notice vdir src_dirname srcdir _xm mode xp)"
+eval "$(setvars "" vdir src_dirname srcdir _xm mode xp)"
 err="fail"
 
 linkpath="${0}"
@@ -28,8 +28,6 @@ main()
 	[ $# -lt 1 ] && badcmd
 	spath="script/$1"
 
-	[ "$1" = "dependencies" ] && x_ install_packages $@ && return 0
-
 	[ "$(id -u)" != "0" ] || $err "this command as root is not permitted"
 
 	for g in "which git" "git config --global user.name" \
@@ -49,17 +47,6 @@ main()
 	set -u -e # some commands disable them. turn them on!
 }
 
-install_packages()
-{
-	[ $# -lt 2 ] && badcmd "fewer than two arguments"
-	[ -f "config/dependencies/$2" ] || badcmd "unsupported target"
-
-	. "config/dependencies/$2"
-
-	x_ $pkg_add $pkglist && [ -n "$aur_notice" ] && \
-	printf "You need AUR packages: %s\n" "$aur_notice" 1>&2; return 0
-}
-
 git_init()
 {
 	[ -L ".git" ] && return 1