orcus0.12 build failure

[Paul Goyette <paul%whooppee.com@localhost>]

The update to libixion seems to have broken orcus0.12 build

...
checking for MDDS... yes
checking for LIBIXION... no
configure: error: Package requirements (libixion-0.12 >= 0.12.0) were 
not met:

Package 'libixion-0.12', required by 'virtual:world', not found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.


+------------------+--------------------------+----------------------------+
| Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:          |
| (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee dot com   |
| Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd dot org |
+------------------+--------------------------+----------------------------+