comments for the package lists helps. also, updating bundled apacman version

extra/pre-build.d/etc/apacman.conf

@@ -11,10 +11,11 @@
 #buildonly=1
 #cachevcs=1
 #ignorearch=1
-#keepkeys=1
+keepkeys=1
 needed=1
 #noaur=1
 noconfirm=1
+nodatabase=1
 noedit=1
 nofail=1
 #preview=1
@@ -37,6 +38,10 @@ skipcache=1
 #pacmanconf="/etc/pacman.conf"
 #downdir="/var/cache/pacman/pkg"
 #savedir="/var/cache/apacman/pkg"
+#database="/var/lib/apacman"
+#pacmandb="/var/lib/pacman/sync/aur.db"
+#pkgfiledb="/var/cache/pkgfile/aur.files"
+#localrepo="aur"
 #editor="nano -w"
 #pager="less -R"
 #RPCURL="https://aur.archlinux.org/rpc.php?type"
@@ -55,4 +60,3 @@ skipcache=1
 #COLOR5='\e[1;34m'
 #COLOR6='\e[1;33m'
 #COLOR7='\e[1;31m'
-