Howto added - Grand Central Dispatch

[Stephen Woolerton]

Hi everyone,

Just to let you know that I've added a howto  for "Building GNUstep with 
clang, blocks, and Grand Central Dispatch" to the GNUstep wiki.
It is at http://wiki.gnustep.org/index.php/User_Guides

GNUstep is new to me, so if there are any inaccuracies in the howto, 
you're welcome to let me know and I'll fix it up.

Thanks to everyone involved in GNUstep- it is an achievement to be able 
to run the same objective C Foundation code on both Apple and Linux.

Cheers
Stephen