Added table entries for Irix 6.5 names for confstr()/sysconf()/ pathconf() names, from Sjoerd.
Added table entries for Irix 6.5 names for confstr()/sysconf()/
pathconf() names, from Sjoerd.

Added code to verify that these tables are properly ordered, only
included and used when CHECK_CONFNAME_TABLES is defined.  This is only
needed to test the tables, so I haven't enabled this by default.

sk-/python2.7-type-annotator,sk-/python2.7-type-annotator,sk-/python2.7-type-annotator