repository: remove unnecessary include of path.h

This also made it clear that several .c files that depended upon path.h
were missing a #include for it; add the missing includes while at it.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/fetch-pack.c b/fetch-pack.c
index 0f71054..207548b 100644
--- a/fetch-pack.c
+++ b/fetch-pack.c
@@ -25,6 +25,7 @@
 #include "oidset.h"
 #include "packfile.h"
 #include "object-store.h"
+#include "path.h"
 #include "connected.h"
 #include "fetch-negotiator.h"
 #include "fsck.h"