[glib/glib-2-50] Add missing check for termios.h

[Ondrej Holy <oholy src gnome org>]

commit f4ccafc4245c19b6cb255c5e5765093f6e33086c
Author: Ondrej Holy <oholy redhat com>
Date:   Fri Dec 2 13:07:25 2016 +0100

    Add missing check for termios.h
    
    Check for termios.h is missing and passwords in the new gio tool
    are echoed in the terminal consequently, which is really bad!
    
    https://bugzilla.gnome.org/show_bug.cgi?id=775517

 configure.ac |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 21623ec..fdacbd8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -712,6 +712,7 @@ AC_CHECK_HEADERS([sys/select.h stdint.h inttypes.h sched.h malloc.h])
 AC_CHECK_HEADERS([sys/vfs.h sys/vmount.h sys/statfs.h sys/statvfs.h sys/filio.h])
 AC_CHECK_HEADERS([mntent.h sys/mnttab.h sys/vfstab.h sys/mntctl.h fstab.h])
 AC_CHECK_HEADERS([linux/magic.h])
+AC_CHECK_HEADERS([termios.h])
 
 # Some versions of MSC lack these
 AC_CHECK_HEADERS([dirent.h sys/time.h])