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>

builtin/fetch.c

@@ -28,6 +28,7 @@
 #include "utf8.h"
 #include "packfile.h"
 #include "pager.h"
+#include "path.h"
 #include "pkt-line.h"
 #include "list-objects-filter-options.h"
 #include "commit-reach.h"