Copy the release notes from 0.2.1.26 into the master ChangeLog

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+Changes in version 0.2.1.26 - 2010-05-02
+  Tor 0.2.1.26 addresses the recent connection and memory overload
+  problems we've been seeing on relays, especially relays with their
+  DirPort open. If your relay has been crashing, or you turned it off
+  because it used too many resources, give this release a try.
+
+  This release also fixes yet another instance of broken OpenSSL libraries
+  that was causing some relays to drop out of the consensus.
+
+  o Major bugfixes:
+    - Teach relays to defend themselves from connection overload. Relays
+      now close idle circuits early if it looks like they were intended
+      for directory fetches. Relays are also more aggressive about closing
+      TLS connections that have no circuits on them. Such circuits are
+      unlikely to be re-used, and tens of thousands of them were piling
+      up at the fast relays, causing the relays to run out of sockets
+      and memory. Bugfix on 0.2.0.22-rc (where clients started tunneling
+      their directory fetches over TLS).
+    - Fix SSL renegotiation behavior on OpenSSL versions like on Centos
+      that claim to be earlier than 0.9.8m, but which have in reality
+      backported huge swaths of 0.9.8m or 0.9.8n renegotiation
+      behavior. Possible fix for some cases of bug 1346.
+    - Directory mirrors were fetching relay descriptors only from v2
+      directory authorities, rather than v3 authorities like they should.
+      Only 2 v2 authorities remain (compared to 7 v3 authorities), leading
+      to a serious bottleneck. Bugfix on 0.2.0.9-alpha. Fixes bug 1324.
+
+  o Minor bugfixes:
+    - Finally get rid of the deprecated and now harmful notion of "clique
+      mode", where directory authorities maintain TLS connections to
+      every other relay.
+
+  o Testsuite fixes:
+    - In the util/threads test, no longer free the test_mutex before all
+      worker threads have finished. Bugfix on 0.2.1.6-alpha.
+    - The master thread could starve the worker threads quite badly on
+      certain systems, causing them to run only partially in the allowed
+      window. This resulted in test failures. Now the master thread sleeps
+      occasionally for a few microseconds while the two worker-threads
+      compete for the mutex. Bugfix on 0.2.0.1-alpha.
+
+
 Changes in version 0.2.2.13-alpha - 2010-04-24
   Tor 0.2.2.13-alpha addresses the recent connection and memory overload
   problems we've been seeing on relays, especially relays with their