Remove changes files for items already merged into 0.3.4.6-rc

changes/bug20424_029_minimal

-  o Minor bugfixes (compilation):
-    - When compiling with --enable-openbsd-malloc or --enable-tcmalloc, tell
-      the compiler not to include the system malloc implementation. Fixes bug
-      20424; bugfix on 0.2.0.20-rc.

changes/bug26485

-  o Minor bugfixes (directory authority):
-    - When voting for recommended versions, make sure that all of the
-      versions are well-formed and parsable. Fixes bug 26485; bugfix on
-      0.1.1.6-alpha.

changes/bug26627

-  o Minor bugfixes (v3 onion services):
-    - Stop sending ed25519 link specifiers in v3 onion service introduce
-      cells, when the rendezvous point doesn't support ed25519 link
-      authentication. Fixes bug 26627; bugfix on 0.3.2.4-alpha.
-    - Stop putting ed25519 link specifiers in v3 onion service descriptors,
-      when the intro point doesn't support ed25519 link authentication.
-      Fixes bug 26627; bugfix on 0.3.2.4-alpha.

changes/bug26785

-  o Minor bugfixes (compilation, portability):
-    - Don't try to use a pragma to temporarily disable
-      -Wunused-const-variable if the compiler doesn't support it.
-      Fixes bug 26785; bugfix on 0.3.2.11.

changes/bug26787

-  o Minor bugfixes (testing):
-    - Disable core dumps in test_bt.sh, to avoid failures in "make
-      distcheck". Fixes bug 26787; bugfix on 0.2.5.2-alpha.

changes/bug26789

-  o Minor bugfixes (compilation):
-     - Update build system so that tor builds again with
-       --disable-unittests after recent refactoring efforts.
-       Fixes bug 26789; bugfix on 0.3.4.3-alpha.

changes/bug26830

-  o Minor bugfixes (continuous integration):
-    - Skip an unreliable key generation test on Windows, until the underlying
-      issue in bug 26076 is resolved. Fixes bug 26830; bugfix on 0.2.7.3-rc.

changes/bug26853

-  o Minor bugfixes (continuous integration):
-    - Skip an unreliable key expiration test on Windows, until the underlying
-      issue in bug 26076 is resolved. Fixes bug 26853; bugfix on 0.3.2.1-alpha.

changes/bug26876

-  o Minor bugfixes (portability):
-    - Work around two different bugs in the OS X 10.10 and later SDKs that
-      would prevent us from successfully targeting earlier versions of OS X.
-      Fixes bug 26876; bugfix on 0.3.3.1-alpha.

changes/bug26924

-  o Minor bugfixes (single onion services, Tor2web):
-    - Log a protocol warning when single onion services or Tor2web clients
-      fail to authenticate direct connections to relays.
-      Fixes bug 26924; bugfix on 0.2.9.1-alpha.

changes/bug26927

-  o Minor bugfixes (logging):
-    - Improve the log message when connection initiators fail to authenticate
-      direct connections to relays.
-      Fixes bug 26927; bugfix on 0.3.0.1-alpha.

changes/task26771

-  o Directory authority changes:
-    - The "Bifroest" bridge authority has been retired; the new bridge
-      authority is "Serge", and it is operated by George from the
-      TorBSD project. Closes ticket 26771.

changes/ticket26647

-  o Minor features (controller):
-    - The control port now exposes the list of HTTPTunnelPorts and
-      ExtOrPorts via GETINFO net/listeners/httptunnel and net/listeners/extor
-      respectively.  Closes ticket 26647.