Multiple resolved tasks/issues across the C# landscape. - #1905

…malformed input.

…tions.

…ethod.

…rror capturing better.

…geName()`.

…CsWin32's doesn't have `SetLastError = true`.

… in CsWin32.

This actually half-way implements #1543 for us, so that's a win I suppose!

…GetEffectiveAccess()`.

…hAsync()`.

….GetRunningProcesses()`.

… so we can add more detail.

Fixes #1899.

… MSI deployments.

Initially this was unset to make the InstallTitle read better. It's better that it be set and the InstallName/InstallTitle generation factor it in.

Fixes #1883.

Fixes #1846.

Fixes #1872.