xbps-create(1): support '--compression none' to skip any compression format.

NEWS

@@ -1,5 +1,8 @@
 xbps-0.48 (???):
 
+ * xbps-create(1): --compression now accepts "none" to not use any
+   compression format.
+
  * xbps-create(1): it is now able to generate identical packages when its
    content does not differ. This is the first part required to the
    "100% reproducible builds" goal.

bin/xbps-create/main.c

@@ -103,7 +103,7 @@ usage(void)
 	" -t --tags           A list of tags/categories (blank separated list).\n"
 	" -V --version        Prints XBPS release version.\n"
 	" --build-options     A string with the used build options.\n"
-	" --compression       Compression format: gzip, bzip2, xz (default).\n"
+	" --compression       Compression format: none, gzip, bzip2, xz (default).\n"
 	" --shlib-provides    List of provided shared libraries (blank separated list,\n"
 	"                     e.g 'libfoo.so.1 libblah.so.2').\n"
 	" --shlib-requires    List of required shared libraries (blank separated list,\n"
@@ -845,6 +845,8 @@ main(int argc, char **argv)
 	} else if (strcmp(compression, "bzip2") == 0) {
 		archive_write_add_filter_bzip2(ar);
 		archive_write_set_options(ar, "compression-level=9");
+	} else if (strcmp(compression, "none") == 0) {
+		/* empty */
 	} else {
 		die("unknown compression format %s");
 	}