Add test for setpgrp. Fixes #690317.

configure

 #! /bin/sh
-# From configure.in Revision: 1.394 .
+# From configure.in Revision: 1.395 .
 # Guess values for system-dependent variables and create Makefiles.
 # Generated by GNU Autoconf 2.53 for python 2.3.
 #
@@ -908,7 +908,7 @@ esac
 # Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
 # absolute.
 ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
-ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
 ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
 ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
 
@@ -12082,6 +12082,7 @@ echo "${ECHO_T}MACHDEP_OBJS" >&6
 
 
 
+
 
 
 
@@ -12111,7 +12112,7 @@ for ac_func in alarm chown clock confstr ctermid execv \
  mremap nice pathconf pause plock poll pthread_init \
  putenv readlink realpath \
  select setegid seteuid setgid \
- setlocale setregid setreuid setsid setpgid setuid setvbuf snprintf \
+ setlocale setregid setreuid setsid setpgid setpgrp setuid setvbuf snprintf \
  sigaction siginterrupt sigrelse strftime strptime \
  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
  truncate uname unsetenv utimes waitpid wcscoll _getpty
@@ -17666,7 +17667,7 @@ esac
 # Don't blindly perform a `cd "$ac_dir"/$ac_foo && pwd` since $ac_foo can be
 # absolute.
 ac_abs_builddir=`cd "$ac_dir" && cd $ac_builddir && pwd`
-ac_abs_top_builddir=`cd "$ac_dir" && cd $ac_top_builddir && pwd`
+ac_abs_top_builddir=`cd "$ac_dir" && cd ${ac_top_builddir}. && pwd`
 ac_abs_srcdir=`cd "$ac_dir" && cd $ac_srcdir && pwd`
 ac_abs_top_srcdir=`cd "$ac_dir" && cd $ac_top_srcdir && pwd`
 

configure.in

@@ -1852,7 +1852,7 @@ AC_CHECK_FUNCS(alarm chown clock confstr ctermid execv \
  mremap nice pathconf pause plock poll pthread_init \
  putenv readlink realpath \
  select setegid seteuid setgid \
- setlocale setregid setreuid setsid setpgid setuid setvbuf snprintf \
+ setlocale setregid setreuid setsid setpgid setpgrp setuid setvbuf snprintf \
  sigaction siginterrupt sigrelse strftime strptime \
  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
  truncate uname unsetenv utimes waitpid wcscoll _getpty)

pyconfig.h.in

@@ -378,6 +378,9 @@
 /* Define to 1 if you have the `setpgid' function. */
 #undef HAVE_SETPGID
 
+/* Define to 1 if you have the `setpgrp' function. */
+#undef HAVE_SETPGRP
+
 /* Define to 1 if you have the `setregid' function. */
 #undef HAVE_SETREGID