Bump up version for 2.1.5 release

Also update the release date and the NEWS file.

Signed-off-by: Guido Trotter <ultrotter@google.com>
Reviewed-by: Michael Hanselmann <hansmi@google.com>

NEWS

@@ -4,15 +4,19 @@ News
 Version 2.1.5
 -------------
 
-*(Unreleased)*
+*(Released Thu, 01 Jul 2010)*
 
 A small bugfix release:
   - Fix disk adoption: broken by strict --disk option checking in 2.1.4
   - Fix batch-create: broken in the whole 2.1 series due to a lookup on
     a non-existing option
   - Fix instance create: the --force-variant option was ignored
-  - Fix pylint 0.21 compatibility and warnings with python 2.6
-  - Fix modify node storage with non-fqdn arguments
+  - Improve pylint 0.21 compatibility and warnings with Python 2.6
+  - Fix modify node storage with non-FQDN arguments
+  - Fix RAPI client to authenticate under Python 2.6 when used
+    for more than 5 requests needing authentication
+  - Fix gnt-instance modify -t (storage) giving a wrong error message
+    when converting a non-shutdown drbd instance to plain
 
 Version 2.1.4
 -------------

configure.ac

 # Configure script for Ganeti
 m4_define([gnt_version_major], [2])
 m4_define([gnt_version_minor], [1])
-m4_define([gnt_version_revision], [4])
+m4_define([gnt_version_revision], [5])
 m4_define([gnt_version_suffix], [])
 m4_define([gnt_version_full],
           m4_format([%d.%d.%d%s],