[folks] build: Drop GLib dependency to ≥ 2.38 .2 (from 2.39.0)

[Philip Withnall <pwithnall src gnome org>]

commit 1bcaac73f5a908e25e0c93847c04736babf3b2bc
Author: Philip Withnall <philip withnall collabora co uk>
Date:   Wed Nov 6 14:55:42 2013 +0000

    build: Drop GLib dependency to ≥ 2.38.2 (from 2.39.0)
    
    The GLib patches needed for the BlueZ backend to work properly have been
    backported to GLib 2.38, and will appear in the GLib 2.38.2 release.
    
    See: https://bugzilla.gnome.org/show_bug.cgi?id=710726

 NEWS         |    2 +-
 configure.ac |    2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/NEWS b/NEWS
index e380084..abe8de2 100644
--- a/NEWS
+++ b/NEWS
@@ -2,7 +2,7 @@ Overview of changes from libfolks 0.9.5 to libfolks 0.9.6
 =========================================================
 
 Dependencies:
-• GLib ≥ 2.39.0
+• GLib ≥ 2.38.2
 • Vala ≥ 0.22.0.28-9090
 
 Major changes:
diff --git a/configure.ac b/configure.ac
index d0dfcc6..2e73ce4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -197,7 +197,7 @@ AM_CONDITIONAL([ENABLE_LIBSOCIALWEB],
 # Dependencies
 # -----------------------------------------------------------
 
-GLIB_REQUIRED=2.39.0
+GLIB_REQUIRED=2.38.2
 VALA_REQUIRED=0.22.0.28-9090
 VALADOC_REQUIRED=0.3.1
 TRACKER_SPARQL_MAJOR=0.16