removed spaces at end of line replaced tabs with spaces
Also unified the header exclusion guard names, removed a couple of files that are no longer used, dropped the '3.13.7' from the Copyright header.
Modifications to allow for CA multicast listening by adding multicast address from EPICS_CA_BEACON_ADDR_LIST (or EPICS_CA_ADDR_LIST if beacon list is empty). Original modifications from Jim Smedinghoff, with further changes by Pierrick Hanlet.
