Add calls to git_extract_argv0_path() in programs that call git_config_*

Programs that use git_config need to find the global
configuration.  When runtime prefix computation is enabled, this
requires that git_extract_argv0_path() is called early in the
program's main().

This commit adds the necessary calls in the programs that use
git_config.

daemon.c

@@ -1055,6 +1055,9 @@ int main(int argc, char **argv)
 	gid_t gid = 0;
 	int i;
 
+	if (argv[0] && *argv[0])
+		git_extract_argv0_path(argv[0]);
+
 	/* Without this we cannot rely on waitpid() to tell
 	 * what happened to our children.
 	 */

fast-import.c

@@ -150,6 +150,7 @@ Format of STDIN stream:
 #include "refs.h"
 #include "csum-file.h"
 #include "quote.h"
+#include "exec_cmd.h"
 
 #define PACK_ID_BITS 16
 #define MAX_PACK_ID ((1<<PACK_ID_BITS)-1)
@@ -2395,6 +2396,9 @@ int main(int argc, const char **argv)
 {
 	unsigned int i, show_stats = 1;
 
+	if (argv[0] && *argv[0])
+		git_extract_argv0_path(argv[0]);
+
 	setup_git_directory();
 	git_config(git_pack_config, NULL);
 	if (!pack_compression_seen && core_compression_seen)

hash-object.c

@@ -7,6 +7,7 @@
 #include "cache.h"
 #include "blob.h"
 #include "quote.h"
+#include "exec_cmd.h"
 
 static void hash_object(const char *path, enum object_type type, int write_object)
 {
@@ -65,6 +66,9 @@ int main(int argc, char **argv)
 	int hashstdin = 0;
 	int stdin_paths = 0;
 
+	if (argv[0] && *argv[0])
+		git_extract_argv0_path(argv[0]);
+
 	git_config(git_default_config, NULL);
 
 	for (i = 1 ; i < argc; i++) {

index-pack.c

@@ -8,6 +8,7 @@
 #include "tree.h"
 #include "progress.h"
 #include "fsck.h"
+#include "exec_cmd.h"
 
 static const char index_pack_usage[] =
 "git index-pack [-v] [-o <index-file>] [{ ---keep | --keep=<msg> }] [--strict] { <pack-file> | --stdin [--fix-thin] [<pack-file>] }";
@@ -877,6 +878,9 @@ int main(int argc, char **argv)
 	unsigned char pack_sha1[20];
 	int nongit = 0;
 
+	if (argv[0] && *argv[0])
+		git_extract_argv0_path(argv[0]);
+
 	setup_git_directory_gently(&nongit);
 	git_config(git_index_pack_config, NULL);
 

unpack-file.c

@@ -1,5 +1,6 @@
 #include "cache.h"
 #include "blob.h"
+#include "exec_cmd.h"
 
 static char *create_temp_file(unsigned char *sha1)
 {
@@ -25,6 +26,9 @@ int main(int argc, char **argv)
 {
 	unsigned char sha1[20];
 
+	if (argv[0] && *argv[0])
+		git_extract_argv0_path(argv[0]);
+
 	if (argc != 2)
 		usage("git-unpack-file <sha1>");
 	if (get_sha1(argv[1], sha1))

var.c

@@ -4,6 +4,7 @@
  * Copyright (C) Eric Biederman, 2005
  */
 #include "cache.h"
+#include "exec_cmd.h"
 
 static const char var_usage[] = "git var [-l | <variable>]";
 
@@ -56,6 +57,9 @@ int main(int argc, char **argv)
 		usage(var_usage);
 	}
 
+	if (argv[0] && *argv[0])
+		git_extract_argv0_path(argv[0]);
+
 	setup_git_directory_gently(&nongit);
 	val = NULL;