The ASCIIDOC_CONF_FILES setting for asciidoc was only generated
if any of the guides were being built.
Clean up a dup setting and some and blank lines in FindASCIIDOC
Change-Id: Ie8ab97db09e18cdb8d7e2a7bd4dcf8c288dd036f
Reviewed-on: https://code.wireshark.org/review/19291
Petri-Dish: Graham Bloice <graham.bloice@trihedral.com>
Reviewed-by: Gerald Combs <gerald@wireshark.org>
Reviewed-by: Graham Bloice <graham.bloice@trihedral.com>