iOS / asi-http-request

Move build cookie headers into its own method

Thanks to Duane Fields for this!

Thanks to Christopher Atlan for these!

* re-order stream schedule/open/setclient
* stop unscheduling stream on complete when using persistent connections

You can never have enough tests! :)

Conflicts:
	Classes/ASIHTTPRequest.m
	Classes/Tests/PerformanceTests.m

…pping the runloop when done
Make readStream non-atomic

…alidated and it leaks the whole request
Stop reading request headers in handleBytesAvailable - they are now read only in handleStreamComplete.
This change prevents a neverending loop of ASIAuthenticationDialogs caused by the new lockless delegate authentication system.
(It also means the request body will always get downloaded, which may be useful sometimes when failing authentication)

…vents a crash for async requests when only the timer is retaining the request

Fix a potential leak when creating a request where the old stream would not get released if opening the new one failed
statusTimer is now a retained property
Tweak tests to remove leaks

Add helpful comments to some of the new additions, reinstate refs to the mailing list posts that were so helpful

…her than only when it's the same request
Test tweaks

Retain timer so we can explictly manage when we no longer need it, it will retain request

…pid and complicated one in ruby

…(or gcd thread pool on sn)
This is probably for the best in the long wrong - the extra flexibility brings x-platform behaviour differences / bugs, and would almost certainly mean support headaches down the line
* Combine authenticationChallengeInProgress / proxyAuthenticationNeeded into authenticationNeeded
* Make readStream an NSInputStream = more typecasting, but less CFRetain/CFRelease risks, and probably better for subclassers
* Tweak tests and remove support for auto-redirect for 305/307 to prevent crash
* Use more accessors

Redirect / authentication required requests download the full response before trying again, so they can re-use the connection
Invalidate the connection when a request fails to prevent subsequent requests getting stuck on a bad line

More performance tests

…t, ASIBucketObject all now implement the NSCopying protocol
Tweak to notify NSOperation that the request is finished when failWithError called (important for requests that fail during construction)

Conflicts:
	Classes/ASIHTTPRequest.m
	Classes/Tests/ASIHTTPRequestTests.m

Closes gh-14.

Also fixed unit tests for S3 on Mac, continued fallout from that setDoubleValue: debacle

…e browser convention (rather than the rfc)

Conflicts:
	Classes/ASIHTTPRequest.m

…uest created by ASINetworkQueue fails
Thanks to Hermes Pique for his bug report!

Add back in Snow Leopard detection for deciding whether to spawn a new thread
Made delegate authentication work again in a background thread
Tweak tests

Expand explanation on delegate selectors
Thanks to Christoph Ludwig for noting these issues!