aprsc 2.1.11: Centos repo fix, memory use improvements

[Heikki Hannikainen]

aprsc 2.1.11 is now available.

Upgrading on Debian / Ubuntu:

sudo apt-get update && sudo apt-get upgrade
sudo systemctl disable aprsc
sudo systemctl enable aprsc
sudo reboot (to test that it works, if upgrading from pre-2.1.7)

Upgrading on CentOS:

sudo yum upgrade
sudo /etc/init.d/aprsc liveupgrade

Mac OS X & FreeBSD:

http://he.fi/aprsc/down/


Changes:

* Some slight code refactoring and CPU performance improvements in packet
input / parsing code, and a little miscellaneous refactoring elsewhere
* Uses 75% less memory for holding old packets, noticeable improvement
with high packet rates
* Fixed a virtual memory leak when static limit for packet buffer
allocation is met (i.e. high packet rate fills up the buffer space).
Virtual memory was allocated, but not used/referenced, VSZ increased in an
uncontrolled fashion.
* The Centos RPM YUM repository should work again - there was a problem
with the repository management program, createrepo, going missing in new
Ubuntu releases, preventing the repository index from being built.

Ubuntu 16.04 is no longer being built - be sure to upgrade to 18.04 or
preferably 20.04.

- Hessu