iOS / asi-http-request

Authenticate method now returns an NSError if something goes wrong
Change lock mediating access to credentials to recursive

Add a lock around the statics in ASICloudFilesRequest

Merge branch 'master' into integration

Conflicts:
	Classes/ASIHTTPRequest.m

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

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

Stop using c99 loop variable declarations, use unsigned ints

Conflicts:
	Classes/ASIHTTPRequest.m
	iPhone.xcodeproj/project.pbxproj
	set_version_number.sh

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)