[tracker] Another need for XOPEN_SOURCE_EXTENDED missed in previous commit.

[Antoine Jacoutot <ajacoutot src gnome org>]

commit 626c04163154bb2044d0d329778f14bf7b746e45
Author: Antoine Jacoutot <ajacoutot gnome org>
Date:   Wed Apr 10 17:51:12 2013 +0200

    Another need for XOPEN_SOURCE_EXTENDED missed in previous commit.
    
    Was missed in 3443706bbe0c1c2e465336c59f87cec90929ff1e

 src/tracker-needle/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/tracker-needle/Makefile.am b/src/tracker-needle/Makefile.am
index fa78a09..adbc2b6 100644
--- a/src/tracker-needle/Makefile.am
+++ b/src/tracker-needle/Makefile.am
@@ -11,6 +11,7 @@ AM_VALAFLAGS = \
 AM_CPPFLAGS =                                      \
        $(BUILD_CFLAGS)                                \
        -D_XOPEN_SOURCE                                \
+       -D_XOPEN_SOURCE_EXTENDED                       \
        -I$(top_srcdir)/src                            \
        -I$(top_builddir)/src                          \
        -DTRACKER_UI_DIR=\"$(datadir)/tracker/\"       \