hide sys/wait.h header and provide wrappers for waitpid macros * bootstrap.conf: Use sys_wait and waitpid gnulib modules. * liboctave/wrappers/wait-wrappers.c, added liboctave/wrappers/wait-wrappers.h: New files. * changed liboctave/wrappers/module.mk: Update. * liboctave/system/syswait.h: Delete. * liboctave/system/module.mk: Update. * oct-syscalls.cc, oct-syscalls.h (wcontinue, wcoredump, wifcontinued, wifexited, wifsignaled, wifstopped, wexitstatus, wnohang, wstopsig, wtermsig, wuntraced): New functions. (waitpid): Use octave_waitpid_wrapper. * lo-cutils.c, lo-cutils.h (octave_waitpid, octave_wifexited, octave_wexitstatus, octave_wifsignaled, octave_wtermsig, octave_wcoredump, octave_wifstopped, octave_wstopsig, octave_wifcontinued): Delete. * lo-utils.h (class octave_wait): Delete. * octave-gui.cc, help.cc: Don't include sys/wait.h. * pager.cc, sighandlers.cc, syscalls.cc, toplev.cc: Use wait functions from octave::sys namespace. * main.in.cc: Use wait-wrappers.h. * src/module.mk: Update.

--- a/libinterp/corefcn/pager.cc	Wed Jun 15 16:41:02 2016 -0400
+++ b/libinterp/corefcn/pager.cc	Thu Jun 16 01:00:20 2016 -0400
@@ -30,6 +30,7 @@
 
 #include "cmd-edit.h"
 #include "oct-env.h"
+#include "oct-syscalls.h"
 #include "singleton-cleanup.h"
 
 #include "defaults.h"
@@ -108,7 +109,7 @@
 
   if (pid > 0)
     {
-      if (octave_wait::ifexited (status) || octave_wait::ifsignaled (status))
+      if (octave::sys::wifexited (status) || octave::sys::wifsignaled (status))
         {
           // Avoid warning() since that will put us back in the pager,
           // which would be bad news.