Create both dvbv5 and dvbv3 dtv-scan-tables packages
    
    The dtv-scan-tables source tree were converted to have
    all files on the more complete DVBv5 file format, capable of
    representing all kinds of digital TV standards.
    
    Yet, legacy applications like dvb-apps may still need a file
    with the old format. Ok, one could easily convert from one
    format to the other, but it is easier for the users to have
    two separate packages.
    
    So, change the dtv-scan-tables.spec to produce two packages:
    	dtv-scan-tables - with dvbv5 files
    	dvb-scan-tables-legacy - with dvbv5 channel legacy format.
    
    Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>