[Toolchain] Archive versioning

Allow toolchain builder to add a suffix to toolchain name.
It is useful for rebuilding the same toolchain in different environment.

(cherry picked from commit 83148fc5bb4e8bcc5afcf119df53ec1bc854be17)

kotlin-native/tools/toolchain_builder/build_toolchain.sh

@@ -4,6 +4,7 @@ set -eou pipefail
 
 TARGET=$1
 VERSION=$2
+TOOLCHAIN_VERSION_SUFFIX=$3
 HOME=/home/ct
 ZLIB_VERSION=1.2.11
 
@@ -33,7 +34,12 @@ build_zlib() {
 
 build_archive() {
   cd $HOME/x-tools
-  FULL_NAME=$TARGET-$VERSION
+  if [ -z "$TOOLCHAIN_VERSION_SUFFIX" ]
+  then
+    FULL_NAME="$TARGET-$VERSION"
+  else
+    FULL_NAME="$TARGET-$VERSION-$TOOLCHAIN_VERSION_SUFFIX"
+  fi
   mv "$TARGET" "$FULL_NAME"
   ARCHIVE_NAME="$FULL_NAME.tar.gz"
   tar -czvf "$ARCHIVE_NAME" "$FULL_NAME"