[Vortex] Patches for building on Mac OS X

[Francis Brosnan Blazquez]

> Sorry, forgot to mention I'm using vortex-1.0.15.b3522.g3524

Hi,

Having fixed the PKG_CONFIG_PATH issue, and assuming you comment the
unsetenv declaration, does vortex compile?

If so, check the build running regression test found inside test/
directory:

>> ./vortex-regression-listener
(in other terminal)
>> ./vortex-regression-client

Thanks for reporting. Cheers!

PD: Certainly it is required a README.OSX, at least, with the
PKG_CONFIG_PATH issue.

-- 
Francis Brosnan Blazquez <francis at aspl.es>
Advanced Software Production Line, S.L.