afni update to 2011_05_26_1457

[snc@…]

A new version of AFNI is available: 2011_05_26_1457.

Unfortunately, this new addition requires segtools which doesn't exist in MacPorts. This needs solved before the upgrade can take place.

Also, this package has snuck in some more references to /usr/local/, which the accompanying patch remedies.

[snc@…]

update and deal with /usr/local/

[snc@…]

I also believe we need to drop Tiger support as the files that use to accompany ANFI for that platform have gone missing on the dist site (check Portfile history to see them).