- block indenting for a try-with-resources block uses the indent
  of the left parenthesis line as base indent but when multiple
  resources are used, they are indented so the block must use
  the indent of the try statement start
- this is needed for
  https://github.com/eclipse-jdt/eclipse.jdt.ui/issues/1261
- fix ASTRewriteFlattener to properly add space before body parenthesis
- fixes #2227