[pygobject] Update NEWS and README, release pygobject 2.21.0

[Gian Mario Tagliaretti <gianmt src gnome org>]

commit 867536c6734e606d045760837ed22583da06566e
Author: Gian Mario Tagliaretti <gianmt gnome org>
Date:   Fri Dec 18 10:50:09 2009 +0100

    Update NEWS and README, release pygobject 2.21.0

 NEWS   |   18 ++++++++++++++++++
 README |    6 +++---
 2 files changed, 21 insertions(+), 3 deletions(-)
---
diff --git a/NEWS b/NEWS
index a04b99f..93103f8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,21 @@
+2.21.0 18-dec-2009
+        - pygmainloop: fix use of PySignal_WakeUpFD API for nested loops
+          (Philippe Normad, #481569)
+        - Add capabilities to import wrappers from pygi (Simon van der Linden)
+        - Move threads_init() function from 'gobject' to 'glib' (Paul)
+        - Fix wrong minimum checking in float properties (Paul, #587637)
+        - Wrap new API added in GIO 2.22 (Gian Mario)
+        - Fix bad name when rebuilding the unix source module (Gian Mario)
+        - Add the missing limit constants from glibconfig.h
+          (Tomeu Vizoso, #603244)
+        - Suppress warnings about format conversion
+          (Simon van der Linden, #603355)
+        - Properly define Connectable as interface type and not object type
+          (Gian Mario)
+        - Wrap new API added in GIO-UNIX 2.22 (Gian Mario)
+        - Wrap g_find_program_in_path (Gian Mario, #598435)
+        - Add pygi-external.h into Makefile SOURCES (Gian Mario)
+
 2.20.0 23-sep-2009
         - Allow to use automake 1.11 (Paolo Borelli)
         - Specify programming language in .devhelp file (Frédéric Péters)
diff --git a/README b/README
index 32d2587..734e0ba 100644
--- a/README
+++ b/README
@@ -42,9 +42,9 @@ Requirements
 ============
   * C compiler (GCC and MSVC supported)
   * Python 2.3.5 or higher
-  * Glib 2.14.0 or higher
-  * GIO 2.16.0 or higher
-  * GIO-unix 2.16.0 or higher
+  * Glib 2.22.4 or higher
+  * GIO 2.22.4 or higher
+  * GIO-unix 2.22.4 or higher
   * libffi (optional)
 
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