clean up cancellation header docs
Make +nameForType: a class method
Dynamically patch NSURLCredentialStorage for storing SSSH credentials
Support for retrieving default SSH credential
Correct format string
Fixes 32bit builds
Use libcurl's error output for NSLocalizedFailureReasonErrorKey too
Use curl_easy_strerror() for error failure reason

Not quite ideal, but seems closest parallel libcurl has
Stop using array literals

Fixes the build for people on OS X 10.6
Persist private key passphrases too
Fix build on OS X 10.7 Lion and older by using CoreServices instead of CFNetwork
Note we only support OS X 10.6+ these days
Removed executable flags from some source files.
Removed outdated built documentation. Comments are in source files anyway.
Removed the manifest file.
Removed dev notes.
Removed CURLHandleTester.
Removed pre-built libraries.
Removed external libraries build scripts and instructions.
Removed references to external pre-built libraries from project file.
Merge remote-tracking branch 'upstream/sam/async'

Conflicts:
	SFTP