Log Message:
textproc/grep: update to 3.3

* Noteworthy changes in release 3.3 (2018-12-20) [stable]

** Bug fixes

  Some uses of \b in the C locale and with the DFA matcher would fail, e.g.,
  the following would print nothing (it should print the input line):
    echo 123-x|LC_ALL=C grep '.\bx'
  Using a multibyte locale, using certain regexp constructs (some ranges,
  backreferences), or forcing use of the PCRE matcher via --perl-regexp (-P)
  would avoid the bug.
  [bug introduced in grep 2.3]

* Noteworthy changes in release 3.2 (2018-12-20) [stable]

** Changes in behavior

  The --files-without-match (-L) option now causes grep to succeed
  when a file is listed, instead of when a line is selected.  This
  resembles what git-grep does.

** Bug fixes

  The --recursive (-r) option no longer fails on MS-Windows.
  [bug introduced in grep 2.11]

** Improvements

  An over-30x performance improvement when many 'or'd expressions
  share a common prefix, thanks to improvements in gnulib's dfa.c,
  by Norihiro Tanaka.  See gnulib commits v0.1-2110-ge648401be,
  v0.1-2111-g4299106ce, v0.1-2117-g617a60974

  An additional 3-23% speed-up when searching large files, via
  increased initial buffer size.

  grep now diagnoses stack overflow.  Before grep-2.6, the included
  regexp code would detect it.  Since 2.6, grep defaulted to using
  glibc's regexp, which lost that capability.