Add xbps-0.59.1.

This also required

- merging of usr/sbin and usr/bin (which should be done anyway), because
  of a dodgy PATH searcher
- moving of zlib earlier.

sysc/run.sh

@@ -22,6 +22,11 @@ create_fhs() {
     for d in bin lib sbin; do
         ln -s "usr/${d}" "/${d}"
     done
+    # Make sbin a symlink to bin
+    mv /usr/sbin/* /usr/bin/
+    rmdir /usr/sbin
+    ln -s bin /usr/sbin
+    ln -s bin /sbin
     mkdir /etc /proc /run /sys /tmp /var
     mount -t proc proc /proc
     mount -t sysfs sysfs /sys