In the dotnet installers we now compare the Release Dword against the lowest 4.6 version, accepting anything >=. Build number from https://msdn.microsoft.com/en-us/library/hh925568(v=vs.110).aspx
Also updated the wix check and xe project, as was done in the similar .net 4.5 upgrade
Signed-off-by: Callum McIntyre <callumiandavid.mcintyre@citrix.com>
