libropkg: convert pkg writer to use bluelib compression streams

libropkg/tar.h

@@ -0,0 +1,24 @@
+#ifndef _TAR_H_
+#define _TAR_H_
+
+struct ustar_header {
+	char tar_filename[100];
+	char tar_mode[8];
+	char tar_uid[8];
+	char tar_gid[8];
+	char tar_filesize[12];
+	char tar_mtime[12];
+	char tar_checksum[8];
+	char tar_type[1];
+	char tar_linkname[100];
+	char tar_ustar_id[6];
+	char tar_ustar_version[2];
+	char tar_owner_name[32];
+	char tar_owner_group[32];
+	char tar_dev_major[8];
+	char tar_dev_minor[8];
+	char tar_filename_prefix[155];
+	char tar_padding[12];
+};
+
+#endif