... for ct-ng configured without --enable-local. Also, install
licenses in subdirectories of the components.
Also, ct-ng configured with --enable-local removed the scripts directory
upon `ct-ng distclean`.
Also, misspelled CT_WGET/CT_CURL variables prevented use of
`ct-ng updatetools`.
Fixes#1091.
Signed-off-by: Alexey Neyman <stilor@att.net>