Fix automatic generation of the dcerpc-eventlog dissector.

The problem described in the README is simply because the conformance file hadn't been updated.

Remove trailing white space from the .idl and .cnf files.

Change-Id: I778f206aa103e5f60574fe2c5c699597969dc644
Reviewed-on: https://code.wireshark.org/review/4042
Reviewed-by: Evan Huus <eapache@gmail.com>
Petri-Dish: Evan Huus <eapache@gmail.com>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
(cherry picked from commit e8491ce72916dfb480760f7e270d08d25ecfc544)
Reviewed-on: https://code.wireshark.org/review/4175
Petri-Dish: Michael Mann <mmann78@netscape.net>