master updated (2c38945 -> df589d3)

[Paul Eggert]

eggert pushed a change to branch master.

      from  2c38945   Fix more compilation warnings in xdisp.c
       new  42ec412   Update from Gnulib
       new  df589d3   Simplify by using Gnulib sigdescr_np module


Summary of changes:
 admin/CPP-DEFINES  |   2 -
 admin/merge-gnulib |   2 +-
 configure.ac       |   7 -
 lib/cdefs.h        |   6 +-
 lib/gnulib.mk.in   |  16 +++
 lib/intprops.h     |  15 ++-
 lib/sig2str.c      |  17 ++-
 lib/sigdescr_np.c  | 376 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 lib/string.in.h    |  15 +++
 lib/verify.h       |  39 ++++--
 m4/gnulib-comp.m4  |   8 ++
 m4/sigdescr_np.m4  |  17 +++
 m4/string_h.m4     |   6 +-
 src/sysdep.c       | 161 +----------------------
 14 files changed, 500 insertions(+), 187 deletions(-)
 create mode 100644 lib/sigdescr_np.c
 create mode 100644 m4/sigdescr_np.m4