/*
* ar_start_gzip()
- * starts the gzip compression/decompression process as a child, using magic
- * to keep the fd the same in the calling function (parent).
+ * starts the compress, gzip or bzip2 compression/decompression process
+ * as a child, using magic to keep the fd the same in the calling function
+ * (parent).
*/
void
ar_start_gzip(int fd, const char *gzip_program, int wr)