Cleanup some whitespace in channelsettings.cpp
ExternalRecorder: Don't leave the external app open when it is not actually
in use.  Better recovery from 'feed' issues.
(cherry picked from commit e10e01d84ffd40e5f1abf00030f70ee5cd464120)

Conflicts:
	mythtv/libs/libmythtv/recorders/ExternalStreamHandler.cpp
	mythtv/programs/mythfilerecorder/main.cpp