Tagged V1_47 for general release.

Update VS2012 configuration, builds on Win32 again

- use ws2tcpip.h, packet.lib to get inet_ntop
- removed support/inet_ntop.[ch] -- no longer necessary
- update gitignore to nuke MSFT turds

Version bump for release

update copyright notice and version information

update online help reference to include new "single" to ``-W''

update CHANGES.txt for release

updated the TODO list

update usage()

updated libpcap location

minor cosmetic fixup