+2013-08-29 Pádraig Brady <P@draigBrady.com>
+
+ bootstrap: remove the --version requirement from ancillary tools
+ * build-aux/bootstrap (check_exists): A new refactored function to
+ determine if a command exists.
+ (find_tool): Use the new function which does not require the
+ --version option to be supported.
+ (check_versions): Use the new function.
+
2013-08-26 Simon Josefsson <simon@josefsson.org>
gc: support HMAC-SHA256 and HMAC-SHA512.