add sync-patches scripts

util/sync-patches.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+set -e
+#set -x
+
+if [ $# -ne 2 ]; then
+    echo "Usage: $0 old_ver new_ver"
+    exit 1
+fi
+
+old=$1
+new=$2
+
+old_num=$(echo $old | awk -F. '{printf("%d", $1 * 1000000 + $2 * 1000 + $3)}')
+new_num=$(echo $new | awk -F. '{printf("%d", $1 * 1000000 + $2 * 1000 + $3)}')
+
+old_pat=$(echo $old | sed 's/\./\\./g')
+topdir=`dirname $0`
+topdir="$topdir/.."
+
+cd $topdir/patches
+
+for file in `ls | grep nginx-$old`; do
+    #echo $file
+    new_file=`echo $file | sed s/1.27.0/1.27.1/`
+    sed "s/$old_pat/$new/g" $file | sed "s/\b$old_num\b/$new_num/g" > $new_file
+done