docs/pod test failures

[Bo Lindbergh]

Quoth <julien at trigofacile.com>:
> 
> No particular reason.  Just a bug!  I forgot to add the magic to change Perl interpreter when integrating this script into our test suite.

There are more cases of hard-coded /usr/bin/perl that might need
the fixscript treatment too:
    contrib/mkbuf
    contrib/analyze-traffic.pl
    contrib/authmysql
    innfeed/testListener.pl
    support/mkchangelog
    support/mkmanifest
    tests/data/overview/munge-data

I'll leave this to somebody who's more familiar with the codebase than I am...


/Bo Lindbergh