Ignore trailing 0 when checking available versions against spec

[agross]

source "http://nuget.org/api/v2"
nuget "Newtonsoft.Json" "6.0.5.0"

>paket install
Analyzing Paket.dependencies
  Newtonsoft.Json 6.0.5.0
No package found which matches Newtonsoft.Json "6.0.5.0" on [Nuget "http://nuget.org/api/v2"].
Version available:
  3.5.8
  4.0.1
  ...
  6.0.5

A nuget package requiring Newtonsoft.Json may define a dependency on 6.0.5.0 and it would resolve to 6.0.5 instead of 6.0.5.0 when installing.

[bartelink]

and s/which/that/ in the error message ;)