remove changes files that have been used in existing changelogs

changes/bug15609

@@ -1,2 +0,0 @@
-  o Documentation:
-    - Fix capitalization of SOCKS in sample torrc. Closes ticket 15609.

changes/bug17151

@@ -1,7 +0,0 @@
-  o Minor bugfixes (portability):
-    - Use libexecinfo on FreeBSD, to enable backtrace support. Fixes part of
-      bug 17151; bugfix on 0.2.5.2-alpha. Patch from Marcin Cieślak.
-
-  o Minor bugfixes (testing):
-    - Skip backtrace tests when backtrace support is not compiled in. Fixes
-      part of bug 17151; bugfix on 0.2.7.1-alpha. Patch from Marcin Cieślak.

changes/bug17154

@@ -1,3 +0,0 @@
-  o Minor bugfixes (testing):
-    - Fix breakage when running 'make check' with BSD make. Fixes bug
-      17154; bugfix on 0.2.7.3-rc. Patch by Marcin Cieślak.

changes/bug17173-socket-hack-rv

@@ -1,3 +0,0 @@
-  o Minor bug fixes (addresses, testing):
-    - Add unit tests for get_interface_address* failure cases.
-      Fixes bug 17173; bugfix on 0.2.7.3-rc.  Patch by fk/teor.

changes/bug17237_027

@@ -1,3 +0,0 @@
-  o Minor features (compilation):
-    - Repair compilation with the most recent (unreleased, alpha)
-      vesions of OpenSSL 1.1. Fixes part of ticket 17237.

changes/bug17251

@@ -1,3 +0,0 @@
-  o Minor bugfixes (compilation):
-    - Fix an integer overflow warning in test_crypto_slow.c.
-      Fixes bug 17251; bugfix on 0.2.7.2-alpha.

changes/bug17354

@@ -1,4 +0,0 @@
-  o Minor bugfixes (sandbox):
-    - Add the "hidserv-stats" filename to our sandbox filter for the
-      HiddenServiceStatistics option to work properly. Fixes bug 17354;
-      bugfix on tor-0.2.6.2-alpha~54^2~1. Patch from David Goulet.

changes/bug17398

@@ -1,3 +0,0 @@
-  o Minor bugfixes (memory leaks):
-    - Fix a memory leak in ed25519 batch signature checking.
-      Fixes bug 17398; bugfix on 0.2.6.1-alpha.

changes/bug17401

@@ -1,3 +0,0 @@
-  o Major bugfixes (correctness):
-    - Fix a use-after-free bug in validate_intro_point_failure().
-      Fixes bug 17401; bugfix on 0.2.7.3-rc.

changes/bug17402

@@ -1,3 +0,0 @@
-  o Major bugfixes (memory leak):
-    - Fix a memory leak in rend_cache_failure_entry_free().
-      Fixes bug 17402; bugfix on 0.2.7.3-rc.

changes/bug17403

@@ -1,3 +0,0 @@
-  o Minor bugfixes (memory leaks):
-    - Fix a memory leak when reading an expired signing key from disk.
-      Fixes bug 17403; bugfix on 0.2.7.2-rc.

changes/bug17404

@@ -1,6 +0,0 @@
-  o Major bugfixes (security, correctness):
-    - Fix a programming error that could cause us to read 4 bytes before
-      the beginning of an openssl string. This could be used to provoke
-      a crash on systems with an unusual malloc implementation, or
-      systems with unsual hardening installed. Fixes bug 17404; bugfix
-      on 0.2.3.6-alpha.

changes/geoip-october2015

@@ -1,3 +0,0 @@
-  o Minor features:
-    - Update geoip and geoip6 to the October 9 2015 Maxmind GeoLite2 Country database.
-

changes/ifaddrs-tests-network-configs

@@ -1,5 +0,0 @@
-  o Minor bugfixes (testing):
-    - Make the get_ifaddrs_* unit tests more tolerant of different network
-      configurations. (Don't assume every test box has an IPv4 address, and
-      Don't assume every test box has a non-localhost address.
-      Fixes bug 17255; bugfix on 0.2.7.3-rc.  Patch by "teor".