add gitattributes and fix whitespace issues

src/librustpkg/testsuite/pass/commands.txt

@@ -32,4 +32,3 @@ Commands that should succeed:
 15. `rustpkg test foo` runs tests and prints their output, if foo contains #[test]s.
 
 16. If foo is installed, `rustpkg uninstall foo; rustpkg list` doesn't include foo in the list
-

src/librustpkg/testsuite/pass/src/deeply/nested/path/foo/src/main.rs

@@ -15,4 +15,3 @@ The test runner should check that, after `rustpkg install deeply/nested/path/foo
 */
 
 fn main() {}
-