#12 PATCH: cvs 2013-04-20 prettyconf.sh POSIX

[Jari Aalto]

This patch is against CVS 2013-04-20, prettyconf.sh

- Use /bin/sh. The file is POSIX compliant now.
- Instead of ${var}, simplify variabled to $var.
- Send errors to STDERR, normal messages to STDOUT. (E.g. missing arg $1)

[Jari Aalto]

prettyconf.sh POSIX compliant