Revert "abuild: minor cleanup"

This commit seems to kill the entire repository

This reverts commit 46aed957.

buildrepo.in

@@ -22,9 +22,9 @@ usage() {
 
 
 listpackages() {
+	cd "$aportsdir/$1"
 	for i in */APKBUILD; do
-		cd "$aportsdir"/$1/${i%/*} 
-		abuild listpkg
+		APKBUILD=$i abuild listpkg
 	done
 }