Add entries in both ChangeLog and NEWS about the new postflight script. Thanks to Boey Maun Suang for the addition to the guide!

git-svn-id: https://svn.macports.org/repository/macports/trunk/base@31990 d073be05-634f-4543-b044-5fe20cf6d1d6

ChangeLog

@@ -12,6 +12,11 @@ Unreleased:
 
 Release 1.6.0 (pending):
 
+    - Revamped the postflight script that is run by Installer.app with our pkg installer to gracefully
+      handle the addition of PATH, MANPATH and DISPLAY environment variables separately, if needed.
+      Read http://guide.macports.org/#installing.binary.postflight.details for more information
+      (jmpp in many commits directly on the release_1_6 branch).
+
     - Remove LD_PREBIND & LD_PREBIND_ALLOW_OVERLAP variables from MacPorts' environment to prevent
       prebinding of binaries, which can be harmful on Tiger and above (#13436, mww in r31786).
 

NEWS

@@ -18,6 +18,11 @@ Overview of Changes from MacPorts 1.5.2 to MacPorts 1.6.0:
 *) Disabled readline support in interactive mode of the port(1) command by deafult;
 *) Fixed a bug by which the "variants" target of the port(1) command would spit out an error backtrace to the terminal when no match
     was found for the requested port;
+*) Revamped the "postflight" script that takes care of setting a MacPorts-compatible shell environment after installation from our
+    "pkg" is complete; it now gracefully handles the addition of PATH, MANPATH and DISPLAY environment variables separately and only
+    if strictly needed, properly backing up appropriate shell configuration files before proceeding to modify them
+    (http://guide.macports.org/#installing.binary.postflight.details for more information);
+
 
 # Individual port-building related improvements: