refspec: move refspec parsing logic into its own file

In preparation for performing a refactor on refspec related code, move
the refspec parsing logic into its own file.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/checkout.c b/checkout.c
index ac42630..193ba85 100644
--- a/checkout.c
+++ b/checkout.c
@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "remote.h"
+#include "refspec.h"
 #include "checkout.h"
 
 struct tracking_name_data {