ignore: Directory glob is too eager

[Gilnaa]

For the following dir structure:

mkdir target
touch {.,target}/{a,b,c}.rs

And the following settings:

GlobWalker::from_patterns(".", &["target/"])

The following Results are expected:

Ok(DirEntry("../testg/target"))

But extra results appear:

Ok(DirEntry("../testg/target"))
Ok(DirEntry("../testg/target/c.rs"))
Ok(DirEntry("../testg/target/b.rs"))
Ok(DirEntry("../testg/target/a.rs"))

This, and also #5 both stem from the use of ignore and the result negation.

[epage]

Starting to use #9 to explore fixing this.

[Gilnaa]

Closed by 30dd890f4a6ba5354c932dd71dc2cbbdda117091