less: Update to version 458

less: Update to version 458

Version 458 was released on 4 APR 2013.  Differences since version 451:
  * Allow backslash escaping of metacharacters in LESS environment
    variable after the --use-backslash option.
  * Don't quit if syntax errors are found in command line options.
  * Increase sizes of some internal buffers.
  * Fix crash with "stty rows 0".
  * Fix display bug when using up/down arrow on the command line.

Version 451 was released on 4 SEP 2012.  Differences since version 444:
  * Add ESC-F command to keep reading data until a pattern is found.
  * Use exit code of LESSOPEN script if LESSOPEN starts with "||".
  * When up/down arrow is used on the command line immediately after
    typing text, the next command starting with that text is found.
  * Add support for GNU regex.
  * Add configure option --with-regex=none and fix compile errors
    when compiling with no regex library.
  * Fix possible crashes caused by malformed LESSOPEN or
    LESSCLOSE variables.
  * Fix bug highlighting text which is discontiguous in the file
    due to backspace processing.
  * Fix bug in displaying status column when scrolling backwards
    with -J and -S in effect.