Provide access to the name attribute of git_attr

It will be present in any likely future reimplementation, and its
availability simplifies other code.

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/attr.c b/attr.c
index b1d1d6d..bfa1f43 100644
--- a/attr.c
+++ b/attr.c
@@ -36,6 +36,11 @@
 static struct git_attr_check *check_all_attr;
 static struct git_attr *(git_attr_hash[HASHSIZE]);
 
+char *git_attr_name(struct git_attr *attr)
+{
+	return attr->name;
+}
+
 static unsigned hash_name(const char *name, int namelen)
 {
 	unsigned val = 0, c;