Removing wexpect.
Separate Popen code for ssh-add on Windows.
Use PIPE for stdin to ssh-add on XP.
Merge branch 'CVLFAB-545-two-part-ui' of git://github.com/l1ll1/cvl-fabric-launcher into l1ll1-CVLFAB-545-two-part-ui

Conflicts:
	sshKeyDist.py
Typo on sshKeyPath variable; saving result of authentication test.
Refer to correct location of ssh_files() function.
Fails if hostKeys is empty.
Haskell's compiler would pick up all these stupidly simple errors...
Previous merge stuffed up the path for the Windows ssh binaries.
Remove depenence on the pub key file (ask the agent for the pub key)
merge with upstream
fixed some pexpects that should have been expect ;-)