Add items for a 2.0.7 release

NEWS

 Changes between 2.0.6 and 2.0.7:
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+Input:
+ * Fix playback termination when switching ES tracks (PowerPC only)
+ * Fix memory exhaustion vulnerability when playing specifically crafted
+   playlist files
+
+Decoders:
+ * Fix WMA Pro, MPEG 4 ALS, APE, MLP and ADPCM-IMA4 playback
+
+Muxers:
+ * Fix noticeable memory leak when creating AVI files
+
+Video output:
+ * Fix crash when using libvlc in 3rd party applications (Mac only)
+
+Mac OS X Interface
+ * Minor improvements
+
 
 Changes between 2.0.5 and 2.0.6:
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