Mark ChangeLog

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/gcc-4_9-branch@225076 138bc75d-0d04-0410-961f-82ee72b054a4

libffi/ChangeLog

+2015-06-26  Release Manager
+
+	* GCC 4.9.3 released.
+
 2014-10-30  Release Manager
 
 	* GCC 4.9.2 released.