Update NEWS for release

NEWS

+--------------
+PolicyKit 0.93
+--------------
+
+This is PolicyKit 0.93.
+
+WARNING WARNING WARNING: This is a prerelease on the road to PolicyKit
+1.0. Public API might change and certain parts of the code still needs
+some security review. Use at your own risk.
+
+Build requirements
+
+ glib, gobject, gio >= 2.21.4
+ eggdbus-1          >= 0.5
+ pam
+
+Changes since PolicyKit 0.93:
+
+David Zeuthen (16):
+      Post-release version bump to 0.93
+      GIO modules need to be prefix with lib
+      Cancel an authentication if the unique name for the subject vanishes
+      Plug a couple of memory leaks
+      Move local authority management to a separate library
+      Rip out polkit-local and refactor local authority to only use tmp authz
+      Move authentication agent bits to separate authority subclass
+      Also pass the identity of the subject we are checking for
+      Actually make the local authority look up authorization files
+      In .pkla files, use Result{Any,Inactive,Active} instead of just Result
+      Rename some man pages and the daemon binary
+      Add docs detailing how the Local Authority works
+      Add support for querying and revoking temporary authorizations
+      Fix make distcheck
+      Update TODO
+      Update NEWS for release
+
+Yanko Kaneti (2):
+      Use unique ids for sections to prevent them being autogenerated
+      More unique ids to get the docs build fully predictable
+
+David Zeuthen,
+July 20th, 2009
+
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 PolicyKit 0.92
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