Add missing ChangeLog entries

ChangeLog

+2013-07-28
+
+	* packaging/fedora/pidgin-otr.spec: Fedora spec file for 4.x
+	from Paul Wouters <paul@cypherpunks.ca>
+
+2013-06-08
+
+	* po/pt_BR.po: Update to pt_BR translation from the original translator
+
 2013-05-31
 
 	* otr-plugin.c: Add a default max message size for Novell