Merge branch 'en/header-cleanup'

Code clean-up to clarify the rule that "git-compat-util.h" must be
the first to be included.

* en/header-cleanup:
  diff.h: remove unnecessary include of object.h
  Remove unnecessary includes of builtin.h
  treewide: replace cache.h with more direct headers, where possible
  replace-object.h: move read_replace_refs declaration from cache.h to here
  object-store.h: move struct object_info from cache.h
  dir.h: refactor to no longer need to include cache.h
  object.h: stop depending on cache.h; make cache.h depend on object.h
  ident.h: move ident-related declarations out of cache.h
  pretty.h: move has_non_ascii() declaration from commit.h
  cache.h: remove dependence on hex.h; make other files include it explicitly
  hex.h: move some hex-related declarations from cache.h
  hash.h: move some oid-related declarations from cache.h
  alloc.h: move ALLOC_GROW() functions from cache.h
  treewide: remove unnecessary cache.h includes in source files
  treewide: remove unnecessary cache.h includes
  treewide: remove unnecessary git-compat-util.h includes in headers
  treewide: ensure one of the appropriate headers is sourced first

t/helper/test-bloom.c

@@ -1,5 +1,6 @@
-#include "git-compat-util.h"
+#include "cache.h"
 #include "bloom.h"
+#include "hex.h"
 #include "test-tool.h"
 #include "commit.h"
 

t/helper/test-cache-tree.c

@@ -1,6 +1,7 @@
 #define USE_THE_INDEX_VARIABLE
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "tree.h"
 #include "cache-tree.h"
 #include "parse-options.h"

t/helper/test-crontab.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 
 /*
  * Usage: test-tool crontab <file> -l|<input>

t/helper/test-ctype.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 
 static int rc;
 

t/helper/test-dump-cache-tree.c

@@ -1,6 +1,7 @@
 #define USE_THE_INDEX_VARIABLE
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "tree.h"
 #include "cache-tree.h"
 

t/helper/test-dump-split-index.c

@@ -1,6 +1,7 @@
 #define USE_THE_INDEX_VARIABLE
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "split-index.h"
 #include "ewah/ewok.h"
 

t/helper/test-dump-untracked-cache.c

@@ -2,6 +2,7 @@
 #include "test-tool.h"
 #include "cache.h"
 #include "dir.h"
+#include "hex.h"
 
 static int compare_untracked(const void *a_, const void *b_)
 {

t/helper/test-example-decorate.c

@@ -1,5 +1,5 @@
 #include "test-tool.h"
-#include "cache.h"
+#include "git-compat-util.h"
 #include "object.h"
 #include "decorate.h"
 

t/helper/test-fast-rebase.c

@@ -15,6 +15,7 @@
 
 #include "cache-tree.h"
 #include "commit.h"
+#include "hex.h"
 #include "lockfile.h"
 #include "merge-ort.h"
 #include "refs.h"

t/helper/test-hash.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 
 int cmd_hash_impl(int ac, const char **av, int algo)
 {

t/helper/test-json-writer.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 #include "json-writer.h"
 
 static const char *expect_obj1 = "{\"a\":\"abc\",\"b\":42,\"c\":true}";

t/helper/test-match-trees.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "tree.h"
 
 int cmd__match_trees(int ac, const char **av)

t/helper/test-oid-array.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "oid-array.h"
 
 static int print_oid(const struct object_id *oid, void *data)

t/helper/test-oidmap.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "oidmap.h"
 #include "strbuf.h"
 

t/helper/test-oidtree.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "oidtree.h"
 
 static enum cb_next print_oid(const struct object_id *oid, void *data)

t/helper/test-pack-mtimes.c

@@ -1,5 +1,6 @@
 #include "git-compat-util.h"
 #include "test-tool.h"
+#include "hex.h"
 #include "strbuf.h"
 #include "object-store.h"
 #include "packfile.h"

t/helper/test-partial-clone.c

@@ -1,4 +1,5 @@
 #include "cache.h"
+#include "hex.h"
 #include "test-tool.h"
 #include "repository.h"
 #include "object-store.h"

t/helper/test-pcre2-config.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 #include "grep.h"
 
 int cmd__pcre2_config(int argc, const char **argv)

t/helper/test-prio-queue.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 #include "prio-queue.h"
 
 static int intcmp(const void *va, const void *vb, void *data)

t/helper/test-proc-receive.c

@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "connect.h"
+#include "hex.h"
 #include "parse-options.h"
 #include "pkt-line.h"
 #include "sigchain.h"

t/helper/test-reach.c

@@ -1,8 +1,9 @@
 #include "test-tool.h"
-#include "cache.h"
+#include "alloc.h"
 #include "commit.h"
 #include "commit-reach.h"
 #include "config.h"
+#include "hex.h"
 #include "parse-options.h"
 #include "ref-filter.h"
 #include "string-list.h"

t/helper/test-read-midx.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "midx.h"
 #include "repository.h"
 #include "object-store.h"

t/helper/test-ref-store.c

@@ -1,5 +1,6 @@
 #include "test-tool.h"
 #include "cache.h"
+#include "hex.h"
 #include "refs.h"
 #include "worktree.h"
 #include "object-store.h"

t/helper/test-repository.c

@@ -3,6 +3,7 @@
 #include "commit-graph.h"
 #include "commit.h"
 #include "config.h"
+#include "hex.h"
 #include "object-store.h"
 #include "object.h"
 #include "repository.h"

t/helper/test-run-command.c

@@ -9,8 +9,6 @@
  */
 
 #include "test-tool.h"
-#include "git-compat-util.h"
-#include "cache.h"
 #include "run-command.h"
 #include "strvec.h"
 #include "strbuf.h"

t/helper/test-sigchain.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 #include "sigchain.h"
 
 #define X(f) \

t/helper/test-simple-ipc.c

@@ -3,13 +3,14 @@
  */
 
 #include "test-tool.h"
-#include "cache.h"
+#include "gettext.h"
 #include "strbuf.h"
 #include "simple-ipc.h"
 #include "parse-options.h"
 #include "thread-utils.h"
 #include "strvec.h"
 #include "run-command.h"
+#include "trace2.h"
 
 #ifndef SUPPORTS_SIMPLE_IPC
 int cmd__simple_ipc(int argc, const char **argv)

t/helper/test-submodule-nested-repo-config.c

@@ -1,4 +1,5 @@
 #include "test-tool.h"
+#include "cache.h"
 #include "submodule-config.h"
 
 static void die_usage(const char **argv, const char *msg)

t/helper/test-wildmatch.c

@@ -1,5 +1,4 @@
 #include "test-tool.h"
-#include "cache.h"
 
 int cmd__wildmatch(int argc, const char **argv)
 {