Update ChangeLog and version.py for v0.9rc2

ChangeLog

+2015-02-27, v0.9rc2
+	* Fix a typo that raised an AttributeError exception on *BSD systems
+	* Fix a bug that broke the VirtIO installation in some cases in Windows
+
 2015-02-24, v0.9rc1
 	* Add Linux syspreps for disabling the IPv6 privacy extensions and for
 	  changing the boot timeout

image_creator/version.py

 
-__version__ = "0.9rc1"
+__version__ = "0.9rc2"
 __version_vcs_info__ = {
     'branch': 'release-0.9',
-    'revid': '516f525',
-    'revno': 681}
+    'revid': '57e48a9',
+    'revno': 686}
 __version_user_email__ = "skalkoto@grnet.gr"
 __version_user_name__ = "Nikos Skalkotos"