Remove xiu branch of vncterm-wrapper

xiu has been gone a long time.

Signed-off-by: John Else <john.else@citrix.com>
Fix vncterm path for buildroot

Signed-off-by: John Else <john.else@citrix.com>
Fix vncterm path for 64-bit XenServer

Signed-off-by: John Else <john.else@citrix.com>
Merge pull request #1868 from johnelse/fix-vncterm-wrapper

CA-141578: Fix paths in vncterm-wrapper