patch 8.0.0445: getpgid is not supported on all systems
Problem: Getpgid is not supported on all systems.
Solution: Add a configure check.
diff --git a/src/configure.ac b/src/configure.ac
index 113fad1..4445cf5 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -3609,7 +3609,7 @@
AC_CHECK_FUNCS(fchdir fchown fsync getcwd getpseudotty \
getpwent getpwnam getpwuid getrlimit gettimeofday getwd lstat \
memset mkdtemp nanosleep opendir putenv qsort readlink select setenv \
- setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
+ getpgid setpgid setsid sigaltstack sigstack sigset sigsetjmp sigaction \
sigprocmask sigvec strcasecmp strerror strftime stricmp strncasecmp \
strnicmp strpbrk strtol tgetent towlower towupper iswupper \
usleep utime utimes)