Update CHANGES heading

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@105597 65c4cc65-6c06-0410-ace0-fbb531ad65f3

CHANGES

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---- Functionality changes since Asterisk 1.4-beta was branched ----------------
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+--- Functionality changes from Asterisk 1.6.0 to Asterisk 1.6.1  -------------
+------------------------------------------------------------------------------
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+
+
+------------------------------------------------------------------------------
+--- Functionality changes from Asterisk 1.4.X to Asterisk 1.6.0  -------------
+------------------------------------------------------------------------------
 
 AMI - The manager (TCP/TLS/HTTP)
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