Build fibers branch on loom

Author: JakubVanek

scripts/config.sh

@@ -287,6 +287,7 @@ elif [ "$JDKVER" == "loom" ] || [ "$JDKVER" == "tip" ]; then
     VERSION_POLICY="latest_commit"
     VERSION_SUFFIX="ev3-loom-experimental"
     JAVA_REPO="https://github.com/openjdk/loom.git"
+    JAVA_BRANCH="fibers"
   else
     VERSION_POLICY="latest_tag"
     JAVA_REPO="https://github.com/openjdk/jdk.git"

scripts/fetch.sh

@@ -58,6 +58,11 @@ if [ ! -d "$JDKDIR" ]; then
       SUFFIX="$VERSION_SUFFIX"
     fi
 
+    # override branch
+    if [ ! -z "$JAVA_BRANCH" ]; then
+      JAVA_TARGET="$JAVA_BRANCH"
+    fi
+
     # download it
     echo "[FETCH] Cloning Java repo from Git"
     echo "[FETCH] - repo url:   $JAVA_REPO"