Add a "Cherry picks" line to the release notes

I was confused about the bulleted list on 0.2.2, so I figured it
would be nice tell people what the commit list is.

--
MOS_MIGRATED_REVID=120577721
diff --git a/scripts/release/relnotes.sh b/scripts/release/relnotes.sh
index adbfe9e..711e697 100755
--- a/scripts/release/relnotes.sh
+++ b/scripts/release/relnotes.sh
@@ -39,7 +39,7 @@
   [ -n "${BASELINE_LINE}" ] || return 1  # No baseline = initial release
   local BASELINE_LINENB=$(echo "${BASELINE_LINE}" | cut -d ":" -f 1)
   BASELINE=$(echo "${BASELINE_LINE}" | cut -d " " -f 2)
-  local CHERRYPICK_LINE=$(($BASELINE_LINENB + 1))
+  local CHERRYPICK_LINE=$(($BASELINE_LINENB + 3))
   # grep -B999 looks for all lines before the empty line and after that we
   # restrict to only lines with the cherry picked hash then finally we cut
   # the hash.
@@ -149,13 +149,21 @@
 # commit should be the baseline, and the other one are the cherry-picks.
 # The result is of the form:
 # Baseline: BASELINE_COMMIT
+#
+# Cherry picks:
 #    + CHERRY_PICK1: commit message summary of the CHERRY_PICK1. This
 #                    message will be wrapped into 70 columns.
 #    + CHERRY_PICK2: commit message summary of the CHERRY_PICK2.
 function create_revision_information() {
   echo "Baseline: $(git rev-parse --short "${1}")"
+  first=1
   shift
   while [ -n "${1-}" ]; do
+    if [[ "$first" -eq 1 ]]; then
+      echo -e "\nCherry picks:"
+      first=0
+    fi
+
     local hash="$(git rev-parse --short "${1}")"
     local subject=$(git show -s --pretty=format:%s $hash)
     local lines=$(echo "$subject" | wrap_text 56)  # 14 leading spaces.
diff --git a/scripts/release/relnotes_test.sh b/scripts/release/relnotes_test.sh
index 92538ff..9322b5d 100755
--- a/scripts/release/relnotes_test.sh
+++ b/scripts/release/relnotes_test.sh
@@ -113,6 +113,8 @@
 ## Cherry-picking bb59d88
 
 Baseline: 965c392
+
+Cherry picks:
    + bb59d88: RELNOTES[INC]: Remove deprecated "make var" INCDIR
 
 $TEST_INC_CHANGE
@@ -127,6 +129,8 @@
 ## Cherry-picking bb59d88 and 14d905b
 
 Baseline: 965c392
+
+Cherry picks:
    + bb59d88: RELNOTES[INC]: Remove deprecated "make var" INCDIR
    + 14d905b: Add --with_aspect_deps flag to blaze query. This flag
               should produce additional information about aspect
@@ -159,6 +163,8 @@
 
 ```
 Baseline: 965c392
+
+Cherry picks:
    + bb59d88: RELNOTES[INC]: Remove deprecated "make var" INCDIR
 ```
 
@@ -176,6 +182,8 @@
 
 ```
 Baseline: 965c392
+
+Cherry picks:
    + bb59d88: RELNOTES[INC]: Remove deprecated "make var" INCDIR
    + 14d905b: Add --with_aspect_deps flag to blaze query. This flag
               should produce additional information about aspect
@@ -193,6 +201,8 @@
 
 function test_create_revision_information() {
   expected='Baseline: 965c392
+
+Cherry picks:
    + bb59d88: RELNOTES[INC]: Remove deprecated "make var" INCDIR
    + 14d905b: Add --with_aspect_deps flag to blaze query. This flag
               should produce additional information about aspect