Merge branch 'jn/gitweb-cleanup'

Merge branch 'jn/gitweb-cleanup'

* jn/gitweb-cleanup:
  gitweb: Remove unused $hash_base parameter from normalize_link_target
  gitweb: Simplify snapshot format detection logic in evaluate_path_info
  gitweb: Use capturing parentheses only when you intend to capture
  gitweb: Replace wrongly added tabs with spaces
  gitweb: Use block form of map/grep in a few cases more
  gitweb: Always use three argument form of open
  gitweb: Always use three argument form of open
  gitweb: Do not use bareword filehandles