Fix build script to use default web proxy to download remote files.

[PatrickMcDonald]

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[roncain]

Thanks for the suggestion. We're looking at it now.

[iamjasonp]

Thanks @PatrickMcDonald!

If you're interested, similar fixes probably need to be made to the dotnet/corefx and dotnet/coreclr repos.

[PatrickMcDonald]

dotnet/corefx#38 is already done, I'll have a look at dotnet/coreclr.

[PatrickMcDonald]

It seems the corefx change was reverted with dotnet/corefx#788, I wasn't aware of that. See dotnet/corefx#963

[iamjasonp]

Ahh, I was looking for why I didn't see corefx#38 in master, and was grovelling through the commits for the build.proj.

We synced up the build scripts and proj files between dotnet/wcf and dotnet/corefx a few days before our initial commit, so our build scripts should be reasonably similar. Once dotnet/corefx#963 gets fixed, that change should come over here too.

[PatrickMcDonald]

Good stuff, I think the change should be relatively simple, I'll have a look there.

[iamjasonp]

Awesome - thanks!