Share code between delegating HttpsURLConnections.
Address PushObserver feedback.
Merge pull request #594 from square/jwilson_0304_delegating_https_url_connection

Share code between delegating HttpsURLConnections.
fix #596: incorrect processing of variable-length quantity in http/2 hpack.
Merge pull request #599 from square/adrian.pushobserver-nits

Address PushObserver feedback
Kill some dead code on source and sink closing.
Merge pull request #598 from square/adrian.fix-byteStringLength

incorrect processing of variable-length quantity in http/2 hpack
Merge pull request #597 from square/jwilson_0304_kill_some_dead_code

Kill some dead code on source and sink closing.
OkHttp 1.5 changelog.
Restore support for ResponseCache.setDefault().
Attempt to deflake readSendsWindowUpdate by not enforcing order of window update frames.
Merge pull request #603 from square/adrian.readSendsWindowUpdate-deflake

Do not enforcing order of window update frames
Removing requestLine from HttpURLConnection.getRequestProperties()

This was breaking an Android test and appears not to be part of the spec for
HttpURLConnection.

To fix the test fully another change was required to add additional headers
passed to the CookieHandler.

Also added are some tests ported over from Android that test
CookieHandler/CookieManager and improve coverage of this area.
Make HttpURLConnection streams throw IOException after close()

This is to revert to prior behavior found in earlier releases:
OkHttp changed to throw IllegalStateException.

HttpEngine has also been changed to explicitly close the request
body on disconnect() to ensure that these exceptions are thrown
at the expected moment (e.g. on write() on a closed, buffered
stream).

Additional close() checks have been added to okio classes and
tests have been added. The tests are probes for interesting
examples, not complete.
Merge pull request #604 from nfuller/ResponsePropertiesRequestLine

Removing requestLine from HttpURLConnection.getRequestProperties()
Merge pull request #609 from nfuller/IOExceptionOnClose2

Make HttpURLConnection streams throw IOException after close()
Merge pull request #601 from square/jwilson_0305_cache_access

Restore support for ResponseCache.setDefault().
Update MWS to pay attention to throttling for SPDY streams.
Test case for #567: read timeout granularity.
fix #605: Allow DELETE Request Body, Ensure Sane Behavior.