Update FTP directories to include new layout. Previously discussed with
kensmith and others as this alleviates the need for the symbolic link upkeep
which is currently manually maintained.
MFC: r235643

Properly use LDADD & DPADD to link against libwrap.
MFC: r241720 (partial)

Fix warnings found by -Wmising-variable-declarations.
MFC: r229780 (partial)

Spelling fixes for libexec/