Fixed ConcurrentModificationException when compiling lots of method readers under Java 17, closes #103 (#104)

Author: glukos

src/main/java/net/openhft/compiler/MyJavaFileManager.java

@@ -99,7 +99,7 @@ public boolean isSameFile(FileObject a, FileObject b) {
         return fileManager.isSameFile(a, b);
     }
 
-    public boolean handleOption(String current, Iterator<String> remaining) {
+    public synchronized boolean handleOption(String current, Iterator<String> remaining) {
         return fileManager.handleOption(current, remaining);
     }