iOS / asi-http-request

Fix leak in iPad sample

Also change urls from my local machine to the asi website

Conflicts:
	Classes/ASIHTTPRequest.h
	Classes/ASIHTTPRequest.m
	iPhone Sample/QueueViewController.m
	iPhone Sample/SynchronousViewController.m
	iPhone Sample/UploadViewController.m

…ey haven't been set to nil since performBlockOnMainThread: was called

…the markAsFinished calls will cause requests to be deallocated

* Ask cache for responseData rather than reading directly from the cached file path when not downloading to disk

Fix blocks test

Small fixes to iPad sample

Conflicts:
	Classes/ASIHTTPRequest.h
	Classes/ASIHTTPRequest.m
	iPhone Sample/UploadViewController.m
	iPhone.xcodeproj/project.pbxproj

Conflicts:
	Classes/ASIHTTPRequest.h
	Classes/ASIHTTPRequest.m

Fix exception in ASIWebPageRequest when not using a downloadDestinationPath and body is nil

…here available. This makes viewing cached local content in a web view work better
* Use xmlsave api to prevent libxml adding xml declaration to the generated html
* Add html5 audio tag, and video poster attribute to xpath query
* Prevent download of webm, ogg and ogv files
* Make accurate progress tracking work in iPhone sample

Fix progress views not showing up in iphone sample, and fix potential divide by zero
More comments to explain ASIWebPageRequest

Conflicts:
	Classes/ASICacheDelegate.h
	Classes/ASIDownloadCache.m
	Mac.xcodeproj/project.pbxproj
	iPhone.xcodeproj/project.pbxproj

Tweak reading content-length to allow responses larger than 2GB

* ASIDownloadCache now strips trailing slashes from urls when building the key used to store the data. Now it doesn't matter if the request's url includes the trailing slash or not
* ASIDownloadCache now names all data-files with an .html extension. This allows ASIWebPageRequest to display frames and iframes with local content.
* Remove broken NSURLCache compatibility from ASIDownloadCache
* ASIDownloadCache now stores its data in the NSCachesDirectory instead of  NSTemporaryDirectory (Thanks to Dincho Todorov for pointing this out!)