[glib] Compile private test with -pthread on UNIX

[Ryan Lortie <ryanl src gnome org>]

commit 6b3ec827325cdca7eb2728b07eda4c6b21833b65
Author: VÃctor Manuel JÃquez Leal <vjaquez igalia com>
Date:   Sun Feb 3 19:52:58 2013 +0100

    Compile private test with -pthread on UNIX
    
    The commit f5f151cb removed this linkage, which is needed,
    at least for the toolchain gcc version 4.7.2 (Debian 4.7.2-5)
    
    https://bugzilla.gnome.org/show_bug.cgi?id=693105

 glib/tests/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/glib/tests/Makefile.am b/glib/tests/Makefile.am
index cbf90cd..3ffbab1 100644
--- a/glib/tests/Makefile.am
+++ b/glib/tests/Makefile.am
@@ -120,6 +120,8 @@ gtester-xmllint-check: # check testreport xml with xmllint if present
 
 check-am: gtester-xmllint-check
 
+private_LDFLAGS = -pthread
+
 endif
 
 CLEANFILES = \