[xmlsec] xmlsec 1.2.30-rc1

[Aleksey Sanin]

The XML Security Library 1.2.30 release candidate #1 is published
in the usual place:

https://www.aleksey.com/xmlsec/download/xmlsec1-1.2.30-rc1.tar.gz
https://www.aleksey.com/xmlsec/download/xmlsec1-1.2.30-rc1.sig

This release includes the following changes:

* Enabled XML_PARSE_HUGE for all xml parsers.
* Added s390x support for travis (nayana-ibm).
* Several other small fixes 
(https://github.com/lsh123/xmlsec/commits/master)

Please take a look and let me know if there are any issues.
If everything goes well I plan to publish the release on
Tue, Apr 21st 2020.

Best,

Aleksey