arp vtable with ip, arp and interface where it was seen
Change fgetln (osx specific) in favour of getline (both osx and linux)
arp vtable different implementation in osx and linux
rename vtable field arp->mac
Remove osx dependency on system() call to get arp information
Some fixes:
- clang-format on code
- NULL -> nullptr
- some (char *) changed in std::string favour
- Removed a memory leak.
- Moved struct inside the table namespace
Fix boost split on linux to remove sscanf
Simplify arp, move to arp_table
Faster build on Ubuntu
Cleaner arp_table->arp_cache on Linux/OSX
Merge pull request #438 from theopolis/feature-arp-table

arp_cache vtable for OSX and Linux