Excludes or removes in project folder don't apply to recursive includes from a parent folder

Repro project: [ProjectFolder.zip](https://github.com/Microsoft/msbuild/files/712071/ProjectFolder.zip)

Consider the following project (named `Project.proj`):

```xml

```

The `File` include is recursively including all files starting in the parent directory of the project. The `Exclude` statement is expected to prevent the `Project.proj` file to be excluded.

However, when you build the project:

**EXPECTED:** The `File` item (and hence output message) does not include `Project.proj`
**ACTUAL:** `Project.proj` is included in the file item, as `..\ProjectFolder\Project.proj`