Add merge-pacnews utility

util/usr/bin/merge-pacnews

@@ -0,0 +1,21 @@
+#!/usr/bin/env bash
+
+files=$(find /etc -type f -name '*.pacnew')
+
+for pacnew in $files
+do
+    unprefixed=${pacnew%.pacnew}
+
+    if [[ ! -e "$unprefixed" ]]; then continue; fi
+
+    emacs -eval "(emerge-files nil \"$unprefixed\" \"$pacnew\" \"$unprefixed\")"
+
+    otime=$(stat -c %Y "$unprefixed")
+    ntime=$(stat -c %Y "$pacnew")
+
+    if [[ "$otime" -gt "$ntime" ]]; then
+        rm -v "$pacnew"
+    else
+        echo "Skipping removal of $pacnew"
+    fi
+done