Log Message:
Updated socat to version 1.7.2.1

Security update:
"A heap based buffer overflow vulnerability has been found with data that \ 
happens to be output on the READLINE address." (CVE-2012-0219)

Tested according to the official advisory at \ 
http://www.dest-unreach.org/socat/contrib/socat-secadv3.html

XXX pull-up to 2013Q1