UPD PKGBUILD, fetch configuration file from same version

PKGBUILD

@@ -84,13 +84,22 @@ prepare() {
   done
 
   echo "Setting config..."
+  cfgver=../../config-${pkgver%.*}
+  if test -f "${cfgver}"
+  then
+    echo "${cfgver} exists."
+    cp "${cfgver}" .config
+    echo ".config now has the content of ${cfgver}"
+  else
+    echo "copy original config file, ${cfgver} does not exist."
     cp ../config .config
+  fi
   make olddefconfig
   # this and next line is added by me, Thomas Kuschel oe3tkt
+  read -p "Press enter to continue with menuconfig
   make menuconfig
   diff -u ../config .config | tee "../../config-${pkgver%.*}.patch" || :
   cp .config "../../config-${pkgver%.*}"  
-
   make -s kernelrelease > version
   echo "Prepared $pkgbase version $(<version)"
 }