Generate binding redirect that covers entire range of possible assembly versions

[dmitryvk]

Fixes #1930

[forki]

there are couple of broken integration tests. Could you please try to fix these as well?

[dmitryvk]

Yes, I will (actually, I just tried to fix them once and a little surprised that they failed).

[dmitryvk]

There is now one failing test remains (and an timeout-caused error) but I don't think it's related:

Paket.IntegrationTests.InstallSpecs.#1270 install net461
  Expected string length 4623 but was 5057. Strings differ at index 3952.
  Expected: "...ifier) == '.NETFramework' And ($(TargetFrameworkVersion) =..."
  But was:  "...ifier) == '.NETFramework' And $(TargetFrameworkVersion) ==..."
  --------------------------------------------^