Added libcurl to libs

project/jni/curl/RELEASE-NOTES

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+Curl and libcurl 7.21.3
+
+ Public curl releases:         119
+ Command line options:         143
+ curl_easy_setopt() options:   185
+ Public functions in libcurl:  58
+ Known libcurl bindings:       39
+ Contributors:                 827
+
+This release includes the following changes:
+
+ o Added --noconfigure switch to testcurl.pl
+ o Added --xattr option
+ o Added CURLOPT_RESOLVE and --resolve
+ o Added CURLAUTH_ONLY
+ o Added version-check.pl to the examples dir
+
+This release includes the following bugfixes:
+
+ o check for libcurl features for some command line options
+ o Curl_setopt: disallow CURLOPT_USE_SSL without SSL support
+ o http_chunks: remove debug output
+ o URL-parsing: consider ? a divider
+ o SSH: avoid using the libssh2_ prefix
+ o SSH: use libssh2_session_handshake() to work on win64
+ o ftp: prevent server from hanging on closed data connection when stopping
+   a transfer before the end of the full transfer (ranges)
+ o LDAP: detect non-binary attributes properly
+ o ftp: treat server's response 421 as CURLE_OPERATION_TIMEDOUT
+ o gnutls->handshake: improved timeout handling
+ o security: Pass the right parameter to init
+ o krb5: Use GSS_ERROR to check for error
+ o TFTP: resend the correct data
+ o configure: fix autoconf 2.68 warning: no AC_LANG_SOURCE call detected
+ o GnuTLS: now detects socket errors on Windows
+ o symbols-in-versions: updated en masse
+ o added a couple examples that were missing from the tar ball
+ o Curl_send/recv_plain: return errno on failure
+ o Curl_wait_for_resolv (for c-ares): correct timeout
+ o ossl_connect_common: detect connection re-use
+ o configure: Prevent link errors with --librtmp
+ o openldap: use remote port in URL passed to ldap_init_fd()
+ o url: provide dead_connection flag in Curl_handler::disconnect
+ o lots of compiler warning fixes
+ o ssh: fix a download resume point calculation
+ o fix getinfo CURLINFO_LOCAL* for reused connections
+ o multi: the returned running handles conuter could turn negative
+ o multi: only ever consider pipelining for connections doing HTTP(S)
+
+This release includes the following known bugs:
+
+ o see docs/KNOWN_BUGS (http://curl.haxx.se/docs/knownbugs.html)
+
+This release would not have looked like this without help, code, reports and
+advice from friends like these:
+
+ Dan Fandrich, Guenter Knauf, Pat Ray, Hongli Lai, Kamil Dudka,
+ Stefan Tomanek, Alfred Gebert, Yang Tse, Julien Chaffraix, Adam Light,
+ Rutger Hofman, Matthias Bolte, Heinrich Ko, Dmitri Shubin
+
+        Thanks! (and sorry if I forgot to mention someone)