iOS / asi-http-request

…t headers from the main request.
This meant they wouldn't present authentication information or cookies, as well as custom headers.
Errors thrown by the above HEAD requests now set the error on the main request and talk to its delegate when appropriate

Thanks to Alex Reynolds for noticing this issue!

…oman Busyghin for this fix)

Set content-length for request when setting postBody
Tweak tests

Error userInfo now uses the standard localizedDescription for the description of the error
Stream errors now embed the original error in userInfo dictionary

Added ability to use non-accurate progress for speed
Request HEAD for GET requests when in accurate mode
Calculate postLength outside of main
Bug fixes

Added missing setDownloadProgressDelegate to ASIHTTPRequest

Who knows - this might even be more efficient!

Added tests for ASINetworkQueue and ASIFormDataRequest
Added new tests for ASIHTTPRequest
Moved Mac example to XIB format

ProgressDelegates are now compatible with UIProgressViews as well as NSProgressIndicators

Added iphone example

…ord are supplied after a first failure
Turn off unit test injection in example app so it won't confuse people

Changed one more incorrect path
Turn off unit test injection by default

…ession persistant cookies
One or two small bug fixes