iOS / asi-http-request

Improve iPad ASIWebPageRequest sample to show the resources being downloaded

Fixed a problem where streamError seemed to be non-nil even when no error occurred - change to look at streamStatus instead

Added replaceURLsWithDataURLs option to ASIWebPageRequest to allow leaving HTML and CSS unchanged (useful with the above change)

Added primitive download progress tracking
Tweak Mac sample to load clicked links with ASIWebPageRequest

Still need to add dtd for xhtml, or it will choke on html entities

Necessary because xpath is case-sensitive, and we can't be certain of the case of the rel parameter (eg: rel="stylesheet" vs rel="Stylesheet")

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

Conflicts:
	Mac.xcodeproj/project.pbxproj

Conflicts:
	Classes/ASIHTTPRequest.m
	Classes/Tests/ASINetworkQueueTests.m
	Mac.xcodeproj/project.pbxproj

Conflicts:
	Classes/ASIHTTPRequest.m
	Mac.xcodeproj/project.pbxproj

* Request cache policies implemented as a bitmask - you can now combine multiple policies (eg: ASIAskServerIfModifiedWhenStaleCachePolicy|ASIFallbackToCacheIfLoadFailsCachePolicy)
* You can now tell requests to perform a conditional get only when the cached data is stale (if response is 403, new headers are written to the cache, but the existing response is preserved)

Added tests for canned ACLs

Add support for S3 over HTTPS
Added a couple of new constants for access policies

(Reported by Philippe Jayet)

And also redirectToURL: method - these allow delegates to change the url during a redirect

Change requestReceivedResponseHeaders: delegate method to request:didReceiveResponseHeaders: - this change was nescessary because there's no guarantee the request won't set the headers to nil at any point
Add a manual implementation of setURL: that clears the CFNetwork objects, this fixes a problem where changing the url in a delegate method like authenticationNeededForRequest would cause failure
Rework delegate calling methods (again)
Remove kCFStreamEventOpenCompleted from our list of event callbacks, as we don't do anything with this
Tweak the delegate tests yet again

Make clientCertificates work with NSCopying, headRequest, and release it in dealloc

Added a test for client certificates (iOS only)
Attempt to fix, YET AGAIN, building for 10.6 and that stupid NSXMLParserDelegate

Conflicts:
	.gitignore

Based on an idea from Jesse Rusak -> http://github.com/MindSea/asi-http-request/commit/f346f7f9de333501f732404323e8f73e911fbeea

Based on an idea from Jesse Rusak -> http://github.com/MindSea/asi-http-request/commit/f346f7f9de333501f732404323e8f73e911fbeea

Also add missing files to iPhone project

Conflicts:
	Classes/ASIHTTPRequest.m