message: For naming folders with llvm use dot instead of underscore.
diff: @@ -193,10 +193,10 @@ def build_LLVM(version_LLVM, revision, folder, tarball, debug, selfbuild, extra,
  make_sure_dir_exists(llvm_home)
  + FOLDER_NAME=version_LLVM
  version_LLVM = re.sub('\.', '_', version_LLVM)
  os.chdir(llvm_home)
  - FOLDER_NAME=version_LLVM
  if revision != "":
  FOLDER_NAME = FOLDER_NAME + "_" + revision
  revision = "-" + revision
  