Minor code clean up.
Project file changes (for statically linked vc++ library builds).
Fix support for SGS4 (with empty bulk transfers)

After each bulk transfer sent containing an Odin/Loke protocol packet, we now
send through a zero length bulk transfer. This is required for newer devices to
function correctly.
Bumped version number to 1.4.1
autogen'd for 1.4.1
Cleaned up command line interface

- Removed the "--delay <ms>" argument.
- Improved Action usage info.
Upgraded to libusb-1.0 (1.0.18) post libusbx merge.
Fixed statically linked builds on Windows.