merge(third_party/git): Merge squashed git subtree at v2.23.0

Merge commit '1b593e1ea4' as 'third_party/git'

third_party/git/tar.h

@@ -0,0 +1,25 @@
+#define TYPEFLAG_AUTO		'\0'
+#define TYPEFLAG_REG		'0'
+#define TYPEFLAG_LNK		'2'
+#define TYPEFLAG_DIR		'5'
+#define TYPEFLAG_GLOBAL_HEADER	'g'
+#define TYPEFLAG_EXT_HEADER	'x'
+
+struct ustar_header {
+	char name[100];		/*   0 */
+	char mode[8];		/* 100 */
+	char uid[8];		/* 108 */
+	char gid[8];		/* 116 */
+	char size[12];		/* 124 */
+	char mtime[12];		/* 136 */
+	char chksum[8];		/* 148 */
+	char typeflag[1];	/* 156 */
+	char linkname[100];	/* 157 */
+	char magic[6];		/* 257 */
+	char version[2];	/* 263 */
+	char uname[32];		/* 265 */
+	char gname[32];		/* 297 */
+	char devmajor[8];	/* 329 */
+	char devminor[8];	/* 337 */
+	char prefix[155];	/* 345 */
+};