AssetConfigResolver, HTTP proxy: Also pass below-HTTP errors to the callback.
AssetConfigResolver, HTTP proxy: Also pass below-HTTP errors to the callback.

slang800/assetgraph,papandreou/assetgraph,papandreou/assetgraph,jscinoz/assetgraph,jscinoz/assetgraph,assetgraph/assetgraph,papandreou/assetgraph,jscinoz/assetgraph,slang800/assetgraph