Update ChangeLog for 2.2.2.
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http://www.canonware.com/cgi-bin/gitweb.cgi?p=jemalloc.git
git://canonware.com/jemalloc.git
+* 2.2.2 (July 30, 2011)
+
+ Bug fixes:
+ - Fix a build error for --disable-tcache.
+ - Fix assertions in arena_purge() (for real this time).
+ - Add the --with-private-namespace option. This is a workaround for symbol
+ conflicts that can inadvertently arise when using static libraries.
+
* 2.2.1 (March 30, 2011)
Bug fixes: