Fix "make checkdpadd" by "spoofing" DPADD

Approved by: jmmv (mentor)
Phabric: D631
PR: 192769
Convert LIBCURSES to LIBNCURSES to fix "make checkdpadd"

Also, add a missing LIBPANEL dependency for lldb

Approved by: rpaulo (mentor)
Suggested by: brooks
MFC after: 5 days
Phabric: D675 (as part of a larger diff)
PR: 192762
Introduce missing definition for LIBTERMCAPW

Some Makefiles expect this value to exist

Approved by: rpaulo (mentor)
MFC after: 5 days
Phabric: D675 (as part of a larger diff)
PR: 192762