remove C++ incompatibilities
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=8416 attachment #10404
Note: The following parts of the patch had been previously done:
asn1/snmp/packet-snmp-template.c
epan/dissectors/packet-snmp.c
epan/dissectors/packet-x11.c
Also; hostlist_table.c: code under '#ifdef HAVE_GEOIP'
didn't compile and needed a few additional patches.
svn path=/trunk/; revision=48447