Log Message:
Update to 0.3.0 from Thomas E. Spanjaard in private mail.  No ABI
changes.

Serf 0.3.0 [2009-01-26, r1216]
  Support LTFLAGS override as a config-time env. variable (Issue 44)
  Fix CUTest test harness compilation on Solaris (Issue 43)
  Fix small race condition in OpenSSL initialization (Issue 39)
  Handle content streams larger than 4GB on 32-bit OSes (Issue 41)
  Fix test_ssl.c compilation with mingw+msys.
  Fix conn close segfault by explicitly closing conn when pool is destroyed.
  Expose the depth of the SSL certificate so the validator can use that info.
  Fix socket address family issue when opening a connection to a proxy.
  Provide new API to take snapshots of buckets.
  Implement snapshot API for simple and aggregate buckets.
  Build with bundled apr and apr-util VPATH builds.
  Build with bundled OpenSSL builds.

Serf 0.2.0 [2008-06-06, r1188]
  Enable use of external event loop: serf_create_context_ex.
  Enable adding new requests at the beginning of the request queue.
  Handle 'Connection:close' headers.
  Enable limiting the number of outstanding requests.
  Add readline function to simple buckets.
  Concatenate repeated headers using comma as separator, as per RFC 2616,
   section 4.2. (Issue 29)
  Add proxy server support.
  Add progress feedback support. (Issue 11)
  Provide new API to simplify use of proxy and progress feedback support.
  Add callback to validate SSL server certificates. (Issue 31)
  Add new test framework.
  Send current version string in the test programs (Issue 21)
  Bugfixes:
     Fix segfault with epoll when removing a NULL socket.
     Reset OpenSSL thread-safety callbacks when apr_terminate() called.
     Do not remove the socket from the pollset on pool cleanup.
     Do not issue double close on skt w/second one being close(-1) (Issue 33)