Generate /etc/services from
and a locally maintained local.xml.
This required creating the initial version of local.xml, which was also automated. (The code for this can be removed when we are sure it is no longer needed.) All of our current /etc/services names still exist, although the primary name and comment for a given number/protocol tuple are determined by the IANA registry by default, so they might have changed. The primary name can be overridden by local.xml, which we have done for port 2049.
/etc/services grows from 2,367 lines and 2,501 names to 11,538 lines and 12,005 names. /var/db/services.db grows from 2 MB to 4.2 MB.
The service-names-port-numbers.xml file from IANA is omitted from this review in order to make it more practical. Whether this file should be committed is an open question.