.gitattributes: ensure t/oid-info/* has eol=lf

The new test_oid machinery in the test library requires reading
some information from t/oid-info/hash-info and t/oid-info/oid.
The shell logic that reads from these files is sensitive to CRLF
line endings, causing a problem when the test suite is run on a
Windows machine that converts LF to CRLF.

Exclude the files in this folder from this conversion.

Signed-off-by: Derrick Stolee <[email protected]>

Author: derrickstolee

.gitattributes

@@ -15,3 +15,4 @@
 /Documentation/gitk.txt conflict-marker-size=32
 /Documentation/user-manual.txt conflict-marker-size=32
 /t/t????-*.sh conflict-marker-size=32
+/t/oid-info/* eol=lf