restored deleted error domains
Bodge Windows directory listings into working much of the time.
Merge branch 'sandvox-2.7'

Conflicts:
	CURLHandleSource/CURLFTPSession.m
Adjust to libcurl's current handling of absolute FTP paths
Merge branch 'sandvox-2.7'
improved debug reporting
Merge branch 'master' into sam/async

Conflicts:
	CURLHandleSource/CURLFTPSession.h
	CURLHandleSource/CURLFTPSession.m
Insert %2F after lead slash, rather than replace it
Otherwise non-root URLs will not resolve properly!
Merge branch 'sandvox-2.7'
Merge branch 'master' into sam/async

Conflicts:
	CURLHandleSource/CURLFTPSession.m
added standalone workspace for this framework
updated tests
added internal init method for use by unit tests
temporary work in progress to get unit tests building
got unit test running
don't need to embed libssh
simplified unit test settings
added test script
fixed test script
cleaned up project