new snapshot available: grep-3.4-almost.46-b2228

[Jim Meyering]

This snapshot has a surprising number of fixes.
Thanks especially to Paul, Norihiro and Bruno for their patches.
The is one pending probable fix from Norihiro, but we still
lack a test case to demonstrate the problem.  Other than that,
I've just noticed that gnulib's regex-test is failing on that
AIX host and on OSX, so expect at least one more snapshot soon.

grep snapshot:
  https://meyering.net/grep/grep-ss.tar.xz      1.6 MB
  https://meyering.net/grep/grep-ss.tar.xz.sig
  https://meyering.net/grep/grep-3.4-almost.46-b2228.tar.xz

Changes in grep since 3.4-almost.31-fe6c:

Jim Meyering (4):
      tests: skip stack-overflow test on midnightbsd*
      build: update gnulib to latest
      tests: test for many-regexp N^2 RSS regression
      tests: fix surrogate-pair test to work on 16-bit wchar_t systems

Norihiro Tanaka (1):
      grep: avoid unnecessary regex compilation

Paul Eggert (11):
      grep: tweak by using mempcpy
      grep: "grep '\)'" reports an error again
      * src/dfasearch.c (struct dfa_comp): Fix out-of-date comment.
      doc: say how to match chars by code
      tests: port timeout test to Alpine
      doc: improve --line-buffer doc
      grep: fix recently-introduced performance glitch
      build: update gnulib submodule to latest
      grep: fix more Turkish-eyes bugs
      grep: pacify Sun C 5.15
      grep: don't assume PCRE in tests


Changes in gnulib since 3.4-almost.31-fe6c:

* gnulib 875dff581...0c487ff12 (15):
  > regex: fix ignore-case Turkish bug
  > regex: port to weird isascii platforms
  > dfa: make dfasupported a global function
  > canonicalize: Add support for UNC file names on native Windows.
  > supersede: Fix test failures on native Windows.
  > test-stdalign: test Oracle Studio better
  > c-stack: output diagnostic in single 'write'
  > c-stack: improve checking if !libsigsegv
  > Revert now-unnecessary override of config.guess on Alpine Linux 3.10.
  > autoupdate
  > relocatable-prog: Fix for multiple relocatable library directories.
  > test-verify.c: avoid -Wshadow warnings
  > havelib: Avoid linking with libc.a on GNU systems.
  > Fix recognition of musl libc on Alpine Linux 3.10.
  > nl_langinfo: Make multithread-safe on Solaris 10 and Solaris 11.3.