[NetKVM] Add vcxproj.user to repository as well. Those files contain certification information.
[NetKVM] Untabify
[VirtioLib] Untabify
[NetKVM] BZ#950623 - Remove DPCChecker and related parameter from INF. Very old code testing for pending interrupt in case of hanged transfer. Not only it is not relevant for newer OSes (MSI is used), but also if such case even exist - it should be fixed in QEMU.