Support globbing directories in addition to files

[aspnet-hello]

From @ChengTian on Wednesday, July 29, 2015 2:56:39 PM

Today we only support globbing files given some patterns. We should allow globbing directories as well.

Sample usage:

var matcher = new Matcher();
matcher.AddInclude("submodules/*/src");
var results = matcher.GetResultsInFullPath(solutionRoot);

and it turns something like
[ "solutionRoot/submodules/FileSystem/src", "solutionRoot/submodules/NuGet/src"]

This is useful in certain scenarios like project resolution.

/cc @troydai

Copied from original issue: aspnet/FileSystem#118

[aspnet-hello]

From @ChengTian on Thursday, August 13, 2015 5:18:03 PM

My beta8 issue aspnet/dnx#1248 depends on this. Assigning to myself.

[aspnet-hello]

Thanks for your feedback. We appreciate your letting us know about the problem you've encountered or suggestion but we are not planning to take further action on this issue because our focus has been on issues with significantly higher customer interest and issues impacting a broad number of customers.