treewide: be explicit about dependence on trace.h & trace2.h

Dozens of files made use of trace and trace2 functions, without
explicitly including trace.h or trace2.h.  This made it more difficult
to find which files could remove a dependence on cache.h.  Make C files
explicitly include trace.h or trace2.h if they are using them.

Signed-off-by: Elijah Newren <newren@gmail.com>
Acked-by: Calvin Wan <calvinwan@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/dir.c b/dir.c
index 18fd14c46b..10f6c38b93 100644
--- a/dir.c
+++ b/dir.c
@@ -23,6 +23,7 @@
 #include "fsmonitor.h"
 #include "setup.h"
 #include "submodule-config.h"
+#include "trace2.h"
 #include "wrapper.h"
 
 /*