perltidy Files

This release includes several new formatting flags (-olbs, -bom, -kgb*).
It has an update to prevent inconsistent owner/group and setuid/setgid
bits, which can pose a security risk:  

## 2019 06 01

    - rt #128477: Prevent inconsistent owner/group and setuid/setgid bits. 
      In the -b (--backup-and-modify-in-place) mode, an attempt is made to set ownership
      of the output file equal to the input file, if they differ.
      In all cases, if the final output file ownership differs from input file, any setuid/setgid bits are cleared.

    - Added option -bom  (--break-at-old-method-breakpoints) by
      merrillymeredith which preserves breakpoints of method chains. Modified to also handle a cuddled call style.

    - Merged patch to fix Windows EOL translation error with UTF-8 written by
      Ron Ivy. This update prevents automatic conversion to 'DOS' CRLF line
      endings.  Also, Windows system testing at the appveyor site is working again.

    - RT #128280, added flag --one-line-block-semicolons=n (-olbs=n) 
      to control semicolons in one-line blocks.  The values of n are:
        n=0 means no semicolons termininating simple one-line blocks
        n=1 means stable; do not change from input file [DEFAULT and current]
        n=2 means always add semicolons in one-line blocks
      The current behavior corresponds to the default n=1.

    - RT #128216, Minor update to prevent inserting unwanted blank line at
      indentation level change.  This should not change existing scripts.

    - RT #81852: Improved indentation when quoted word (qw) lists are 
      nested within other containers using the --weld-nested (-wn) flag.
      The example given previously (below) is now closer to what it would
      be with a simple list instead of qw:

      # perltidy -wn
      use_all_ok( qw{
          PPI
          PPI::Tokenizer
          PPI::Lexer
          PPI::Dumper
          PPI::Find
          PPI::Normal
          PPI::Util
          PPI::Cache
      } );

    - RT#12764, introduced new feature allowing placement of blanks around
      sequences of selected keywords. This can be activated with the -kgb* 
      series of parameters described in the manual.

    - Rewrote vertical algnment module.  It is better at finding
      patterns in complex code. For example,

	OLD:
           /^-std$/ && do { $std       = 1;     next; };
           /^--$/   && do { @link_args = @argv; last; };
           /^-I(.*)/ && do { $path = $1 || shift @argv; next; };

	NEW:
           /^-std$/  && do { $std       = 1;                 next; };
           /^--$/    && do { @link_args = @argv;             last; };
           /^-I(.*)/ && do { $path      = $1 || shift @argv; next; };

    - Add repository URLs to META files 

    - RT #118553, "leave only one newline at end of file". This option was not 
      added because of undesirable side effects, but a new filter script
      was added which can do this, "examples/delete_ending_blank_lines.pl".