grep annotated tag, v2.27, created. v2.27

[Jim Meyering]

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The annotated tag, v2.27 has been created
        at  5071f02f1f6f813d83ea71ec9ecdcf597e94bcd0 (tag)
   tagging  da01b72222b50dbf9ef62c943d33e8ff893c178d (commit)
  replaces  v2.26
 tagged by  Jim Meyering
        on  Tue Dec 6 23:16:22 2016 -0800

- Log -----------------------------------------------------------------
grep 2.27
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Jim Meyering (11):
      maint: post-release administrivia
      maint: die.h: add the "#define ..." part of double inclusion guard
      build: distribute new file, die.h, so "make distcheck" passes
      gnulib: update to latest, for getprogname HPUX port
      doc: grep builds on HP-UX once again
      tests: use "returns_" rather than explicit comparison with "$?"
      doc: fix a doubled "the"
      grep: avoid false matches in non-UTF8 multibyte locales
      tests: use "returns_ N env VAR=val ..."
      grep: fix DFA-induced infloop
      version 2.27

Mark Veltzer (2):
      ignore ar-lib in build-aux
      ignore coverage generated files

Paul Eggert (26):
      grep: die more systematically
      grep: don't assume stdbool.h before die call
      build: update gnulib submodule to latest
      grep: -Pz no longer rejects ^, $
      grep: avoid unnecessary isatty calls
      grep: improve diagnostic on lseek failure
      grep: scale back /dev/null speedup
      grep: drain the input pipe faster
      grep: avoid unnecessary gettext call
      grep: avoid O(N**2) buffer reallocation
      grep: treat -f /dev/null like -m0
      grep: tune -f /dev/null
      grep -f /dev/null -L PAT FILE outputs FILE
      tests: use "returns_" rather than "$?"
      grep: fix performance typo with -P
      grep: document -oz better
      grep: -T no longer outputs BS
      grep: -T now adjusts number widths for worst case
      grep: simplify by using PRIuMAX
      grep: fix -zxP bug
      grep: -P no longer uses PCRE_MULTILINE
      grep: further -P performance fix
      build: update gnulib submodule to latest
      tests: check for unibyte French range bug
      build: update gnulib submodule to latest
      tests: revert check for unibyte French range bug

Zev Weiss (1):
      grep: use 'j' intmax_t printf length modifier if supported

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