treewide: remove double forward declaration of read_in_full

cache.h's nature of a dumping ground of includes prevented it from
being included in some compat/ files, forcing us into a workaround
of having a double forward declaration of the read_in_full() function
(see commit 14086b0a13 ("compat/pread.c: Add a forward declaration to
fix a warning", 2007-11-17)).  Now that we have moved functions like
read_in_full() from cache.h to wrapper.h, and wrapper.h isn't littered
with unrelated and scary #defines, get rid of the extra forward
declaration and just have compat/pread.c include wrapper.h.

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

builtin/clone.c

@@ -42,6 +42,7 @@
 #include "hook.h"
 #include "bundle.h"
 #include "bundle-uri.h"
+#include "wrapper.h"
 
 /*
  * Overall FIXMEs:

bulk-checkin.c

@@ -17,6 +17,7 @@
 #include "packfile.h"
 #include "object-file.h"
 #include "object-store.h"
+#include "wrapper.h"
 
 static int odb_transaction_nesting;
 

combine-diff.c

@@ -16,6 +16,7 @@
 #include "userdiff.h"
 #include "oid-array.h"
 #include "revision.h"
+#include "wrapper.h"
 
 static int compare_paths(const struct combine_diff_path *one,
 			  const struct diff_filespec *two)

compat/pread.c

@@ -1,4 +1,5 @@
 #include "../git-compat-util.h"
+#include "../wrapper.h"
 
 ssize_t git_pread(int fd, void *buf, size_t count, off_t offset)
 {

git-compat-util.h

@@ -859,12 +859,6 @@ int git_lstat(const char *, struct stat *);
 #define pread git_pread
 ssize_t git_pread(int fd, void *buf, size_t count, off_t offset);
 #endif
-/*
- * Forward decl that will remind us if its twin in cache.h changes.
- * This function is used in compat/pread.c.  But we can't include
- * cache.h there.
- */
-ssize_t read_in_full(int fd, void *buf, size_t count);
 
 #ifdef NO_SETENV
 #define setenv gitsetenv

grep.c

@@ -11,6 +11,7 @@
 #include "commit.h"
 #include "quote.h"
 #include "help.h"
+#include "wrapper.h"
 
 static int grep_source_load(struct grep_source *gs);
 static int grep_source_is_binary(struct grep_source *gs,

pack-write.c

@@ -10,6 +10,7 @@
 #include "oidmap.h"
 #include "pack-objects.h"
 #include "pack-revindex.h"
+#include "wrapper.h"
 
 void reset_pack_idx_option(struct pack_idx_option *opts)
 {

path.c

@@ -18,6 +18,7 @@
 #include "object-store.h"
 #include "lockfile.h"
 #include "exec-cmd.h"
+#include "wrapper.h"
 
 static int get_st_mode_bits(const char *path, int *mode)
 {

refs/packed-backend.c

@@ -9,6 +9,7 @@
 #include "../iterator.h"
 #include "../lockfile.h"
 #include "../chdir-notify.h"
+#include "../wrapper.h"
 #include "../write-or-die.h"
 
 enum mmap_strategy {

send-pack.c

@@ -14,6 +14,7 @@
 #include "quote.h"
 #include "transport.h"
 #include "version.h"
+#include "wrapper.h"
 #include "oid-array.h"
 #include "gpg-interface.h"
 #include "shallow.h"

setup.c

@@ -12,6 +12,7 @@
 #include "promisor-remote.h"
 #include "quote.h"
 #include "trace2.h"
+#include "wrapper.h"
 
 static int inside_git_dir = -1;
 static int inside_work_tree = -1;

upload-pack.c

@@ -32,6 +32,7 @@
 #include "commit-graph.h"
 #include "commit-reach.h"
 #include "shallow.h"
+#include "wrapper.h"
 #include "write-or-die.h"
 
 /* Remember to update object flag allocation in object.h */