PP/27 Bugzilla 1047: change the default for system_filter_user to be the Exim
run-time user, instead of root.
+PP/28 Add WHITELIST_D_MACROS option to let some macros be overriden by the
+ Exim run-time user without dropping privileges.
+
+DW/29 Remove use of va_copy() which breaks pre-C99 systems. Duplicate the
+ result string, instead of calling string_vformat() twice with the same
+ arguments.
+
Exim version 4.72
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